TURNING AIR INTO SOLUTIONS. LOW PROFILE HOODED PROPELLER ROOF VENTILATORS. LHD/LHB (Exhaust/Supply) LHDF/LHBF (Filtered Supply)

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TURNING AIR INTO SOLUTIONS. LOW PROFILE HOODED ROOF VENTILATORS LHD/LHB (Exhaust/Supply) LHDF/LHBF (Filtered Supply) CATALOG 4860 April 17

ROOF VENTILATORS Overview Propeller Roof Ventilators LHB with Standard Bird Screen Twin City Fan & Blower Low Profile Hooded Roof Ventilators provide cost effective, general purpose ventilation solutions for commercial and light industrial applications. The aesthetically pleasing modular hood design minimizes extension above the roof line. Both direct and belt driven models are available in exhaust, supply or filtered supply configurations. A wide array of fixed pitch, fabricated steel or adjustable pitch, cast aluminum propellers are available to meet specific performances and application requirements. Twin City Fan & Blower also offers a complete line of options and accessories such as roof curbs, backdraft dampers, disconnect switches and special coatings to maintain single source responsibility. Typical Industries Include Warehouse Ventilation, Office Ventilation, General HVAC, Gymnasium Ventilation, Factory Ventilation, Greenhouse Ventilation, Attic Exhaust, Hospital Exhaust, Agriculture, Manufacturing Exhaust, Paper Mills, Foundry, Textile, Commercial Plan and Spec, Office Ventilation Configurations Hooded Supply or Exhaust Propeller Types "L1" and "L2" Propellers; "B" and "E" Die Propellers; "C" Propellers; "Z" Propellers LHDF (Hooded Filtered Supply) Standard Construction Heavy-Gauge Galvanized Optional Construction Special Coatings, Construction, UL 70 Certifications UL 70 Listed for Electrical All models are UL/CUL 70 listed, for electrical, File No. E18680. FS For complete product performance, drawings, and available accessories, Download Fan Selector at tcf.com. 2 TWIN CITY FAN - CATALOG 4860

ROOF VENTILATORS Overview Models Hooded Hooded non-filtered LHD (direct drive) and LHB (belt driven) models are available for exhaust or supply service and feature a removable galvanized steel hood for cleaning and servicing the fan as well as a galvanized steel birdscreen. LHD (Direct Drive) 14" to 48" wheel diameters Airflow to,00 CFM Static pressure to 1" w.g. LHB (Belt Driven) 21" to 60" wheel diameters Airflow to 7,800 CFM Static pressure to 1" w.g. Filtered Hooded filtered supply models LHDF (direct drive) and LHBF (belt driven) feature a removable galvanized steel hood for cleaning and servicing the fan as well as 2" washable aluminum mesh filters. LHDF (Direct Drive) 21" to 48" wheel diameters Airflow to,400 CFM Static pressure to 1" w.g. LHBF (Belt Driven) 21" to 60" wheel diameters Airflow to 7,600 CFM Static pressure to 1" w.g. Retail and Grocery Store Supply and Exhaust WWW.TCF.COM

CONSTRUCTION FEATURES Exploded View LHD LHB LHDF LHBF Exhaust Supply Modular Hood Design The stackable hood panels allow for easy field assembly when necessary. The snap together rib design provides added strength and rigidity. Hoods are constructed of galvanized steel as standard. Propellers steel or cast aluminum blades and hubs. Propellers on belt driven units shall be welded to the fan shaft or secured to the fan shaft with a taperlock bushing. Propellers on direct drive units shall be mounted directly on the motor shaft with a taperlock bushing. Mechanical Run Test & Final Vibration Check All fans are assembled for a mechanical run test and final balance prior to shipment. Vibration readings are taken in the axial, horizontal and vertical directions at the specified speed. Fans are balanced to 0.1 in./sec. peak or less. Bearings (LHB and LHBF only) iron pillow block bearings selected for L0 average life of 0,000 hours at maximum cataloged operating speeds. Shaft (LHB and LHBF only) Shaft diameters are sized to have a first critical speed of at least 12% of the fan s maximum operating speed. Motors ODP, TEFC and Explosion proof, single and three phase motors are carefully matched to the fan load. Drives (LHB and LHBF only) Motor sheaves shall be of cast iron and supplied as variable pitch standard. Drives and belts shall be rated for 10% of the required motor HP. Motor and Drive Frame Support assemblies are constructed of heavy gauge galvanized or finish painted steel. Motor Access Fans designed for exhaust, supply and filtered supply allow for service and are provided with convenient access to the motor from the roof. 4 TWIN CITY FAN - CATALOG 4860

HOOD CONSTRUCTION FEATURES The Twin City Fan modular hood provides numerous benefits over conventional sheet metal hood designs. LHB, Belt Driven (Showing how hood panels stack together) Hood Construction The Twin City Fan modular hood design features ribbed panels, which provide added strength and rigidity. This is particularly important in climates where snow loads are a consideration. Hood profile allows rain and snow to run off. Hoods are galvanized steel as standard, but can also be constructed of aluminum or painted steel to accommodate specific application requirements. Filtered Supply Units built for filtered supply service (LHDF and LHBF) come standard with 2" washable aluminum mesh filters. On all fan sizes, filters can be removed with the hood in place to allow for easy cleaning of filters and inspection of fan parts. Easy Access Fan sizes 14 to 6 incorporate a pivoted hood design. By removing two fasteners, the hood can be opened up for convenient cleaning and service. Fan sizes 42 to 60 allow for the entire hood to be taken off by removing four fasteners. Exhaust and supply fans are constructed with motor and drive components easily accessible from the roof. There is no need to try and access components below the roof line or through an access door. Non-filtered units include removable birdscreens, which can be removed with the hood still in place to allow for quick and easy inspection of the fan components without taking off the hood. Shipping Advantage Most units ship fully assembled as standard (see chart below for specific models and sizes) to allow for fast and easy installation at the job site. Larger units ship knocked down to the job site as standard and can be easily assembled with standard tools. Twin City Fan does offer the option to ship larger units fully assembled to the job site (standard freight rates do not apply). Contact your local sales representative for more information. MODEL FAN SIZE 14 18 21 24 6 42 48 4 60 LHD F F F F F F F F K --- --- LHDF --- --- --- F F F F K K --- --- LHB --- --- --- F F F F F K K K LHBF --- --- --- F F F F K K K K F = Ships Fully Assembled K = Ships Knocked Down, Field Assembly Required WWW.TCF.COM

COMPARISON FAN SIZE DIRECT DRIVE BELT DRIVEN 14 B, E B, E 18 B, E 21 B, E L1, L2, B, E 24 B, E, Z L1, L2, B, E, Z B, E, Z L1, L2, B, E, Z 6 B, E, Z L1, L2, B, E, Z 42 B, E, Z L1, L2, B, E, Z 48 B, E, Z L1, L2, B, E, Z 4 L1, L2, B, C, Z 60 L1, L2, C, Z Propeller Availability Propellers LHD LHB LHDF LHBF LHD and LHB propeller roof ventilators are available with either fixed pitch fabricated steel (sizes 21 through 60) or adjustable pitch cast aluminum propellers (sizes 14 through 60). Each propeller type is designed for a wide variety of commercial market applications with static pressure capabilities from 0" to 1". Regardless of the application requirement, LHD and LHB propellers offer the right choice. L1 & L2 Propellers The L1 and L2 series features fixed pitch, fabricated steel, -bladed propellers. Galvanized steel propeller blades are riveted to galvanized steel hubs. Available in 8 sizes from 21" to 60" diameters in either standard L1 construction or reinforced L2 construction. B Die Propellers The B series features a die cast aluminum propeller available in 4, and 6 blade designs. Blade angles are factory set and mounted in a die cast aluminum hub. B propellers are available in 14" through 4" diameters. E Die Propellers The E series features a die cast aluminum propeller available in 4 and 8 blade designs. Blade angles are factory set and mounted in a die cast aluminum hub. E propellers are available in 14" through 48" diameters. C Propellers The C series is a cast aluminum propeller available in 4 and 6 blade designs, and is available in 4" and 60" diameters only. Blade angles are factory set and mounted in a cast aluminum hub. Z Propeller The Z series features a fixed pitch, fabricated steel, -bladed propeller. blades are continuously welded to a heavy gauge hub at the customer s selected blade angle. Z propellers are available in 24" through 60" diameters. 6 TWIN CITY FAN - CATALOG 4860

MODEL NOMENCLATURE Model LHD = Low Profile Hooded Propeller Roof Ventilator, Direct Drive LHB = Low Profile Hooded Propeller Roof Ventilator, Belt Driven LHDF = Low Profile Hooded Filtered Supply Propeller Roof Ventilator, Direct Drive LHBF = Low Profile Hooded Filtered Supply Propeller Roof Ventilator, Belt Driven E = Exhaust, S = Supply (LHB/LHD Only) Fan Size Propeller Type L1 = Level 1, Fab. C = Alum., Bladed L2 = Level 2, Fab. C6 = Alum., 6 Bladed = Alum., 4 Bladed E8 = Alum., 8 Bladed Hub Designation (B Propeller Only) Z = Fab., Bladed B =, Adjustable Pitch (4-, - and 6-Bladed) LHB E 24 B 1 0 2 No. of Blades Blade Angle (B, C, E and Z Propellers Only) WWW.TCF.COM 7

OPTIONS/ACCESSORIES 4 2 6 1 1 4 Curb Side Guard Mounted to the curb side of the fan to allow for protection of personnel below fan in non-ducted installations. Twin City Fan recommends the use of a curb side guard on all non-ducted installations. Extended Lube Lines (on panel) Allow for easy lubrication of bearings on belt driven units without disassembly by extending polyethylene lines from fan bearings to exterior of base. 2 Curb Base (Tall) Extended base section with access door and damper tray allows for easy access of motorized and non-motorized backdraft dampers for maintenance and cleaning. This option is advantageous over the standard fan with roof curb extension because the base ships as one piece. Motorized Damper Used to keep unwanted air out of the building when the fan is not in use, dampers are available as either gravity operated or motorized. 6 Single Point Wiring Junction box on exterior of base houses disconnect switch and motorized damper wire connections. Available with tall base, motorized damper and wired disconnect switch only. NEMA R Disconnect Switch NEMA R, rain proof, disconnects are available shipped loose for field mounting and wiring or factory mounted and wired. 8 TWIN CITY FAN - CATALOG 4860

OPTIONS/ACCESSORIES 2 1 1 2 Insect Screen An aluminum insect screen, placed between the fan base and the roof curb, prevents insects from entering the building. Insulated Hood Inside of hood is lined with insulation to reduce sound and condensation from the hood. Tie Downs A quantity of four tie-down brackets are included to help secure the unit to the roof in areas with strong winds. Cables used for tie down are supplied by others. Other Accessories Include: Construction Special Coatings WWW.TCF.COM 9

PREFABRICATED ROOF CURBS Canted Roof Curbs Constructed of 18-gauge galvanized steel with continuous welded seams Large " built-in 4 cant to accommodate roofing material to top of curb. Cant is beveled at corners for better support of roofing material Wood nailer (1 1 2") secured to top ledge Lined with 1 1 2" fiberglass fire-resistant, soundabsorbing insulation Damper shelf standard Options: (-gauge) construction, Burglar security bars, Metal liner (galvanized or aluminum), Special heights up to 24", Single or double pitched curbs for sloping roofs Self Flashing & Straight Sided Roof Curbs Constructed of 18-gauge galvanized steel with continuous welded seams Wide base plate (flashing) to insure watertight seal to roof Top ledge covered with " polystyrene gasket for weather seal and to reduce metal-to-metal conducted noise Lined with 1 1 2" fiberglass fire-resistant, soundabsorbing insulation Damper shelf standard Straight-sided roof curbs are constructed with the same features as the self-flashing curbs, but are one dimensional to allow for field supplied cants and roofing material to be brought up to the top of the curb Options: (-gauge) construction, Burglar security bars, Metal liner (galvanized or aluminum), Special heights up to 24", Wood nailer (1 1 2") secured to top ledge in lieu of polystyrene gasket, Single or double pitched curbs for sloping roofs Curb Adapters Constructed of heavy-gauge galvanized steel with continuous welded seams Top ledge covered with " polystyrene gasket to reduce metal-to-metal conducted noise and act as a weather seal Available in enlarger or reducer (shown) models TWIN CITY FAN - CATALOG 4860

DISCONNECT SWITCHES Disconnect switches provide positive electrical shutoff during fan cleaning or maintenance. NEMA 1 Disconnect Switch (Standard) A NEMA 1 disconnect switch is available shipped loose for field mounting and wiring or factory mounted and wired with ODP or TEFC motors. NEMA 1 Disconnect Switch NEMA R Disconnect Switch A NEMA R, rain proof, disconnect is available shipped loose for field mounting and wiring or factory mounted and wired externally. NEMA 4 Disconnect Switch A NEMA 4, water and dust tight, disconnect is available shipped loose for field mounting and wiring or factory mounted and wired externally. NEMA R Disconnect Switch NEMA 7/9 Disconnect Switch A NEMA 7/9 disconnect switch is recommended on fans with explosion proof motors. The NEMA 7/9 switch is designed for use with fans operating in hazardous environments. Available shipped loose for field mounting and wiring. (Not shown.) NEMA 4 Disconnect Switch WWW.TCF.COM 11

ENGINEERING DATA Material Specifications Direct Drive, LHD/LHDF GAUGE OF MATERIAL FAN SIZE FAN FAN DRIVE S HUBS HOOD HOUSING PANEL FRAME B/E Z Z 14 18 22 14 --- --- 18 22 14 --- --- 18 18 22 14 --- --- 21 18 22 14 DIE --- --- 24 18 22 14 12 CAST 14 12 18 22 14 12 ALUM. 14 12 6 18 22 14 12 12 12 42 22 12 48 22 12 * All gauges are minimums. Material Specifications Belt Driven, LHB/LHBF FAN SIZE FAN HOUS- ING HOOD GAUGE OF MATERIAL FAN PANEL DRIVE FRAME S HUBS SHAFT SIZE (IN.) L1/L2 B/E/C/Z L1/L2 E/C/Z L1/L2 B E C Z L1/L2 Z L1 L2 B/E/C/Z 21 18 22 14 14 --- 4 --- /4 /4 1 24 18 22 14 14 14 4 14 12 /4 /4 1 18 22 14 12 12 CAST 4 14 12 /4 1 1 CAST 6 18 22 14 12 12 ALUM. 2 14 12 /4 1 1 ALUM. 42 22 14 12 12 12 14 0 12 1 1 / 1 / 48 22 14 12 12 12 14 0 12 1 1 / 1 7 / 4 22 14 12 12 14 --- CAST 12 7 1 1 / 1 7 / 60 22 14 12 12 12 --- --- ALUM. / 7 1 / 1 11 / * All gauges are minimums. Shipping Weights LHD/LHDF FAN SIZE B/ E8 Z LHD LHDF LHD LHDF LHD LHDF 14 1 --- --- --- 6 --- --- --- 18 170 7 --- --- --- 21 21 8 2 --- --- 24 272 19 7 4 8 79 472 86 479 7 468 6 12 86 9 1 89 42 64 714 660 729 6 722 48 760 871 776 887 77 884 * Weights are only approximate and do not include accessories. Consult Fan Selector Program for actual shipping weights. Shipping Weights LHB/LHBF FAN L1 L2 B/ E8 C C6 Z SIZE LHB LHBF LHB LHBF LHB LHBF LHB LHBF LHB LHBF LHB LHBF LHB LHBF 21 247 9 24 9 26 212 28 --- --- --- --- --- --- 24 260 269 14 27 18 276 21 --- --- --- --- 277 22 68 48 91 482 9 99 42 --- --- --- --- 88 1 6 46 00 490 62 90 24 97 --- --- --- --- 19 9 42 68 64 62 699 674 74 689 760 --- --- --- --- 682 7 48 678 786 76 86 796 909 812 92 --- --- --- --- 809 922 4 779 92 89 0 --- --- --- --- 942 94 96 18 98 11 60 926 8 28 1187 --- --- --- 14 1 10 12 1191 17 * Weights are only approximate and do not include accessories. Consult Fan Selector Program for actual shipping weights. 12 TWIN CITY FAN - CATALOG 4860

PERFORMANCE DATA Direct Drive, LHD 14 21 LHD SIZE 14 18 21 B E8 B E8 B E8 B E8 HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Max RPM B = 170 = 170 E8 = 170 Max Motor Frame Size = 6 Outlet Area (ft 2 ) = 1.8 170 0. 14. 97 88 862 842 801 74 701 628 478 81 299 1 170 0.14 1.2 1 126 1214 1192 1149 1 949 81 1 /4 170 0.19 1.1 4 18 1 112 146 1418 167 1271 77 2 170 0.2 1.9 191 18 18 1804 171 96 9 1 1298 19 1 / 170 0..8 226 2124 9 64 00 191 187 172 144 170 0.19 12. 1904 1786 17 1718 42 1 1448 126 876 24 1 /4 170 0.22 1.0 2117 199 198 1922 1840 1744 4 1470 17 28 170 0.26 1.7 2297 21 2124 86 06 1919 1819 2 17 2 1 / 170 0.1 14.6 2466 2 2268 2226 219 47 198 172 1244 1 170 0.21 14.6 19 126 109 1490 141 1409 161 128 1146 /4 170 0.26 14.9 18 1779 179 179 97 04 12 184 1170 24 1 / 170 0.2 14.7 211 7 199 191 1904 184 1770 142 Max RPM B = 170 = 170 E8 = 170 Max Motor Frame Size = 6 Outlet Area (ft 2 ) = 1.44 1 170 0. 18.0 142 122 129 1269 1219 19 1112 17 870 679 6 /4 1 170 0.2 19.0 1942 1841 181 1789 176 84 1 141 1 1174 1 / 170 0.4 19. 2424 219 2292 2264 28 211 94 04 1780 170 168 2 1 170 0.44 19.6 2870 276 2726 2696 264 270 204 2401 26 189 6 /2 170 0.4 21 286 14 1 84 11 294 28 2722 246 2121 1817 1 /4 170 0.2 17.6 246 22 2 212 9 1947 189 26 1 / 170 0.29 18.4 2689 244 204 246 276 2279 217 1997 18 24 170 0.7 19.4 14 2862 2821 2778 2687 287 2476 2286 1909 28 1 /2 170 0.4 16 1 64 2967 2867 279 271 2148 2 170 0.2 74 94 46 297 19 8 2968 277 29 1798 1 / 170 0.4 1.4 228 22 2180 219 2114 66 194 1778 181 1 170 0.4 1.0 268 291 267 242 249 244 29 218 2182 1979 76 /2 24 170 0.4 1.4 70 298 296 2940 289 284 2791 2704 22 229 72 Max RPM B = 170 = 170 E8 = 170 Max Motor Frame Size = 6 Outlet Area (ft 2 ) = 1.817 1 /4 170 0.2 22 06 1876 1844 1812 171 92 2 127 14 110 928 670 1 1 170 0.9 2 272 2611 280 249 2487 2424 262 2266 6 1826 29 /2 170 0. 2 409 28 2 221 16 88 2917 2724 242 219 2 /4 170 0.68 24 406 901 866 8 78 684 607 490 274 297 26 1 170 0.8 2 4611 446 44 47 4291 44 4114 971 704 42 2971 1 / 170 0.4 18.8 22 67 19 2970 2871 2768 2661 2486 2141 1 170 0.4 21 719 08 462 6 28 140 299 2642 2176 /2 24 170 0.4 21 4211 400 9 901 796 69 87 41 44 262 1 28 170 0.6 2 4601 4414 46 41 4211 42 988 802 4 2986 24 /4 2 170 0.80 22 019 4819 4766 471 4604 4490 472 4181 806 41 27 12 1 170 0.42 22 269 2462 244 2406 20 2292 22 214 1968 1747 /2 170 0.2 2 141 4 18 2992 2940 2886 28 274 286 286 26 /4 170 0.68 24 724 607 78 49 491 44 78 299 17 26 2699 Max RPM B = 170 = 170 E8 = 170 Max Motor Frame Size = 14T Outlet Area (ft 2 ) = 2.46 1 /2 170 0.4 27 11 292 2912 2872 2791 271 266 21 228 1 1796 1284 1 /4 170 0.68 29 426 41 4071 401 92 871 790 670 46 7 2874 1 170 0.98 29 2 6 12 08 001 4917 481 4700 4477 4218 846 229 2 170 1.26 6296 612 6081 607 947 8 760 61 64 084 4704 928 170 1.7 2 7177 6984 69 688 6782 6677 668 699 6099 761 7 49 12 1 170 0.40 24 900 646 82 98 27 1 2881 27 /2 170 0. 2 461 4422 462 41 4174 4041 901 682 262 /4 170 0.71 1 49 262 2 141 0 488 4749 42 4128 617 24 170 0.89 61 909 84 780 647 07 61 12 476 426 72 1 28 170 1. 680 69 6471 6402 626 61 974 74 480 4226 2 170 1.4 2 77 7114 7046 6978 688 669 644 66 81 2 469 12 /4 170 0.68 22 79 608 74 9 467 9 194 296 2688 28 1 170 0.87 2 4668 41 4496 4461 489 417 424 411 99 714 418 170 1. 26 77 47 401 6 294 221 148 08 4860 4672 44 6 24 170 1.4 28 642 6298 626 622 6 609 6021 907 70 472 8 4480 1. Performance shown is for installation type A: Free inlet, free outlet. 2. Performance ratings do not include the effects of appurtenances (accessories) in the airstream.. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. WWW.TCF.COM 1

PERFORMANCE DATA Direct Drive, LHD 24 6 LHD SIZE 24 6 B E8 Z B E8 Z B6 E8 Z HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Max RPM B = 170 = 170 E8 = 170 Z = 170 Max Motor Frame Size = 184T Outlet Area (ft 2 ) =.7 /4 170 0.68 9 4 42 41 420 4148 4046 946 794 218 29 217 1 170 1.12 6 6267 6070 6021 971 869 767 664 08 244 4946 464 869 170 1. 78 7628 776 72 74 714 7 7040 6761 6466 6117 24 2 2 170 2.0 4 924 90 897 8919 8807 8692 876 896 8088 776 7404 6426 170 2.7 7 14 276 21 14 029 9901 9770 968 9214 88 8412 744 12 1 /2 170 0. 262 492 4870 4786 46 442 421 94 89 /4 170 0.80 6 6627 617 627 617 99 827 67 89 489 419 96 1 170 1.06 8 7721 7426 749 7271 71 6941 676 6481 994 466 4806 24 170 1.7 41 878 8474 89 814 811 798 7812 74 7067 624 912 28 170 1.70 44 9712 940 92 924 9081 8911 87 846 7964 748 690 2 2 170 2.1 46 677 61 280 198 02 9862 9689 94 8949 840 7912 12 1 170 0.98 40 21 07 02 4990 4902 48 471 42 424 896 27 170 1.4 9 6661 6471 642 67 6279 6182 608 940 70 447 126 4274 170 1.76 42 8027 786 7821 7778 7692 7604 714 77 714 6877 69 84 2 24 170 2.22 46 9287 9111 9066 9021 89 888 874 899 80 8094 782 7128 1 /4 860 0.22 1.6 498 948 842 74 47 1 / 860 0.2 1.9 221 4794 4669 42 4217 818 21 40 1 860 0.42 14.8 6028 41 92 22 4862 417 998 /2 4 860 0.0 1. 61 6008 81 68 486 1 /2 10 0.4 2 92 97 14 4 268 111 494 46 /4 10 0.77 24 7042 6742 6661 678 6402 69 99 6 4812 40 1 10 1.02 2 811 7790 7698 7602 798 7 6899 601 8 4 10 1.24 26 887 842 849 8244 8021 7782 722 7089 2 170 1.89 4 8949 8727 8672 86 80 89 8284 8118 78 791 7294 641 Max RPM B = 10 = 10 E8 = 10 Z = 10 Max Motor Frame Size = 184T Outlet Area (ft 2 ) =.02 1 /2 10 0.41 28 74 22 124 4991 471 441 417 66 2626 18 671 1 /4 10 0.6 28 7972 747 744 721 6946 6672 680 881 49 1 10 0.96 27 9977 9460 926 9191 891 86 846 7870 6904 764 2 c 10 1. 27 1171 11214 17 9 644 47 042 9 891 7267 2 10 1.69 29 1292 127 1287 1249 121 11814 11481 948 99 84 12 /4 10 0.68 28 72 6712 68 642 6181 897 602 117 1 10 0.92 27 8709 82 8074 794 7689 74 70 6726 8 10 1. 28 11 9700 982 946 92 8960 8691 826 747 684 24 10 1.4 28 118 178 94 827 67 297 0 972 8781 776 6277 28 2 10 1.92 1 12991 12498 1270 12240 1197 197 11411 98 9074 777 12 10 1.12 29 7071 6802 671 669 609 61 618 909 69 10 1.4 869 8440 874 86 86 80 7867 76 714 660 2 10 1.9 1 2 141 06 990 974 98 90 897 8496 7784 1 /2 860 0.46 18.2 762 69 67 699 629 847 2 /4 860 0.6 18. 9012 86 8197 804 7698 71 6742 788 40 860 0.89 18.8 481 974 948 94 8919 844 7944 68 1 4 860 1.08 19.2 111 47 40 127 968 921 874 10 1.14 28 21 9741 9606 9476 926 9006 877 879 766 69 10 1.60 28 1216 180 119 1147 11191 947 704 24 904 864 40 2 10 2.17 29 1418 1604 1466 126 19 12744 1249 1197 17 9966 Max RPM B6 = 10 = 10 E8 = 10 Z = 10 Max Motor Frame Size = 21T Outlet Area (ft 2 ) = 7.217 1 10 0.96 4 927 8692 84 896 809 7780 740 689 868 4690 9 120 1 10 1.4 44 1266 1217 1 11861 1174 11276 966 471 9487 860 6996 2 10 2.14 4 1876 141 12 1061 14771 14471 1418 1666 1274 12 12 2 10 2.9 46 18896 182 18174 1802 1771 1797 17067 49 1608 142 1186 10.90 49 21722 28 918 71 409 07 1969 19124 18097 94 166 12 1 10 1.04 9 98 90 898 88 8460 8097 7709 707 10 1.8 6 12198 1149 1182 11214 87 27 8 981 8449 707 2 10 1.86 41 1491 1460 14 1404 171 164 12989 1286 11288 024 824 24 10 2.44 40 1728 67 47 1970 1612 121 14626 188 1247 9 28 10.1 44 1977 18944 18779 186 18264 17902 17 898 1821 14718 1 12 2 10 1.84 40 04 986 9471 97 9128 8906 8687 849 10 2.4 4 1284 1202 12412 12 121 1191 11722 1177 698 9982 9212 10.1 48 1788 1427 1 1241 1049 1482 1460 146 1778 1 1244 2 860 1.1 2 1190 12274 8 1187 1104 11122 68 9917 7964 860 1.61 2 17 14767 1470 1471 1978 186 1171 12408 60 40 2 860 2. 26 18061 17192 96 7 28 1761 127 1489 1261 4 860 2.71 27 1918 189 182 188 17606 1708 40 1699 10 2.81 9 17792 17091 92 761 44 147 1867 146 14721 186 12764 1. Performance shown is for installation type A: Free inlet, free outlet. 2. Performance ratings do not include the effects of appurtenances (accessories) in the airstream.. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. 14 TWIN CITY FAN - CATALOG 4860

PERFORMANCE DATA Direct Drive, LHD 42 48 LHD SIZE 42 48 B4 E8 Z B4 E8 Z HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Max RPM B4 = 860 = 860 E8 = 860 Z = 860 Max Motor Frame Size = 24T Outlet Area (ft 2 ) = 9.794 1 860 0.77 12608 11 1127 976 86 9724 8998 78 417 2918 1 860 1.22 2 81 1289 14990 14680 14029 148 1262 1108 909 2 860 1.7 1966 18 18222 17894 170 472 1726 14 128 2 860 2.7 6 224 21271 940 94 1986 19098 1812 17071 1482 860.08 9 2476 2494 2140 2277 211 218 7 1907 279 12 860 1.2 26 1622 12670 1242 1217 160 111 997 2 860 1.77 27 167 12 108 14604 14112 190 1274 24 860.0 22198 21282 24 800 299 1977 192 1879 87 149 12179 28 860.80 4 24942 24001 277 208 2299 22461 21904 224 194 17474 109 2 860 4.7 7 2714 2612 2862 296 206 2401 2926 209 2127 19244 81 12 2 860 2.22 24 168 1 12877 1271 1241 12118 11792 11266 860 2.88 27 81 4 4 071 1797 1 18 14714 1786 12722 860.89 29 97 19822 19676 1929 1922 189 18626 18174 179 461 11 24 860 4.94 29 24 2292 22794 22660 2287 224 21812 21 196 1817 10 860.1 2 21466 882 727 68 26 19882 19496 188 1717 172 14264 860 4. 1 2409 24444 2424 2407 2667 214 22964 22417 2126 19607 17786 Max RPM B4 = 860 = 860 E8 = 860 Z = 860 Max Motor Frame Size = 24T Outlet Area (ft 2 ) = 12.764 860 1.12 4 1761 04 1702 16 1462 1892 10 117 8992 264 2119 1 2 860 1.78 8 22801 21497 21149 791 09 19224 1866 99 14740 860 2.62 40 2784 2629 2882 21 24747 2914 21 21 1911 696 2 860.61 4 1707 277 29900 2914 28714 27864 2692 2497 22870 19908 860 4.89 47 174 602 19 2777 1922 11 28642 2814 2127 12 2 860 1.79 7 1709 184 18 12 146 196 1268 12 860 2.7 6 278 1994 19640 1944 1874 18128 17478 4 146 11908 860. 40 2784 24721 24440 241 21 22908 22228 2117 19189 919 1416 24 860 4.18 8 2964 2829 2827 27940 27 2666 2976 24917 212 27 18467 28 860.40 4 0 26 67 176 1129 48 2976 28666 2687 24829 299 12 860.14 40 17471 66 46 262 1861 147 108 14466 860 4.21 4 2260 2178 2174 21407 261 698 12 19662 1842 17172 1742 860.6 4 2740 2674 2687 26418 2607 2718 2 24784 277 22640 21274 1770 860 4.8 40 427 29288 29014 2870 2820 27770 27296 2670 2184 24 2144 1. Performance shown is for installation type A: Free inlet, free outlet. 2. Performance ratings do not include the effects of appurtenances (accessories) in the airstream.. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. WWW.TCF.COM 1

PERFORMANCE DATA 21 LHB HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level 1 Performance Max RPM L1 = 8 Max Motor Frame Size = 6 Outlet Area (ft 2 ) = 2.46 74 0.22.1 4096 28 14 90 /4 760 0.2.6 4242 711 0 297 784 0.28 11.1 476 876 679 480 07 L1 80 0. 11.8 449 4017 82 67 197 / 8 0. 12.0 4649 42 402 842 446 860 0.7 12.8 4800 47 42 409 668 2 924 0.4 14.2 17 4776 460 4497 419 789 /2 97 0.0 1.0 41 4978 486 472 4401 406 64 988 0..0 14 6 09 494 4627 49 94 Level 2 Performance Max RPM L2 = 1241 Max Motor Frame Size = 14T Outlet Area (ft 2 ) = 2.46 L2 /2 --- /4 924 0.4 14.2 17 4776 460 4497 419 789 97 0.0 1.0 41 4978 486 472 4401 406 64 988 0..0 14 6 09 494 4627 49 94 8 0.6 18.1 90 86 492 89 1 484 4 970 96 0.7 19.4 6117 811 72 628 9 1 4826 421 111 0.8 612 6018 94 84 62 6 089 46 Belt Driven, LHB Level Performance Max RPM B = 1890 = 1890 E8 = 1280 Max Motor Frame Size = 14T Outlet Area (ft 2 ) = 2.46 1142 0.27 1. 444 1 14 6 2914 271 270 227 2 1 /4 48 0.27 1.8 727 44 1 264 7 2860 260 2241 977 0.27 1.0 948 84 477 62 7 2812 2474 122 0.6 17.8 776 7 498 46 6 7 17 278 22 B 2 1 / 110 0. 1.9 4089 827 7 679 8 142 2796 72 0.6 1.0 42 4007 91 817 602 64 91 262 148 0.4 22 47 4149 4099 4048 942 829 711 21 149 2778 2 1 /2 1 0. 4694 4470 44 448 4217 4076 92 678 187 2696 121 0. 18.7 4974 4698 4622 444 476 4190 988 6 298 46 0.79 28 4964 4802 4760 4717 4628 4 448 4286 40 699 47 2 /4 111 0.81 2 7 180 129 077 4969 48 47 442 4184 748 6 1409 0.82 2 694 46 9 28 191 04 4888 46 414 62 1 0.27 14.9 87 62 479 94 21 28 2826 287 28 1 /4 11 0.27 1.6 428 879 77 668 4 8 287 2 4 0.28 12.6 491 961 817 669 407 126 274 1442 0.7 17. 4266 984 9 84 678 1 44 62 28 1 / 1228 0.7 1.8 471 447 424 419 962 744 00 69 2 1148 0.7 14.8 48 448 441 49 947 714 48 2926 0 0. 22 4881 467 474 4 478 4241 40 879 469 28 1 /2 1406 0. 19.7 99 079 4997 49 471 480 496 4088 466 2 114 0. 18. 2 214 12 027 4801 469 462 4046 28 1889 0.82 27 88 76 22 267 1 040 4922 479 4419 4071 80 28 /4 0.82 2 6182 904 8 762 619 476 29 094 460 4119 2 104 0.82 21 62 6060 987 9 741 4 8 07 49 949 E8 2 1 /4 886 0.28 11.1 401 7 6 4 0 84 277 2 1 / 97 0.7 1.0 447 416 4077 999 88 6 4 2960 2 1 /2 11 0..0 2 4841 477 470 468 4428 4277 989 8 2 /4 1277 0.8 88 611 49 7 2 14 494 428 96 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. TWIN CITY FAN - CATALOG 4860

PERFORMANCE DATA Belt Driven, LHB 24 LHB HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level 1 Performance Max RPM L1 = 907 Max Motor Frame Size = 6 Outlet Area (ft 2 ) =.7 87 0.22 9.1 4949 4092 771 80 /4 608 0.2 9.7 126 4 402 676 628 0.28. 294 42 424 944 644 0..7 429 472 446 414 / 667 0. 11. 62 4967 4697 4418 74 689 0.7 12.1 809 191 4944 467 4060 L1 /2 --- /4 740 0.4 1.6 628 690 494 21 4740 4092 767 0.0 14. 6466 946 770 1 064 4492 791 0.9 1.2 6668 6170 6009 811 4 48 847 0.6 17.0 7140 668 648 689 978 7 0 877 0.7 18.0 79 698 6829 6686 614 889 42 906 0.8 18.4 768 72 7098 6966 661 62 801 007 Level 2 Performance Max RPM L2 = 986 Max Motor Frame Size = 14T Outlet Area (ft 2 ) =.7 740 0.4 1.6 628 690 494 21 4740 4092 /2 767 0.0 14. 6466 946 770 1 064 4492 791 0.9 1.2 6668 6170 6009 811 4 48 L2 847 0.6 17.0 7140 668 648 689 978 7 0 --- /4 877 0.7 18.0 79 698 6829 6686 614 889 42 906 0.8 18.4 768 72 7098 6966 661 62 801 007 92 0.91 19.1 787 744 78 7212 6907 614 611 99 966 1.00 8144 778 7648 71 726 6898 612 877 997 1.06 22 840 80 7929 7818 766 7241 686 6287 Level Performance Max RPM B = 19 = 19 E8 = 117 Z = 140 Max Motor Frame Size = 14T Outlet Area (ft 2 ) =.7 67 0. 17.9 4727 49 44 49 4008 791 4 11 2 1 / 977 0.6 1.7 098 470 492 447 4222 94 614 1 9 0.6 14. 82 4900 4760 4611 428 917 446 1226 0. 22 41 147 072 499 4829 466 4472 4174 99 B E8 Z 2 1 /2 1122 0. 19.1 8 18 427 2 1 4911 4676 4278 26 4 0. 18 6180 772 69 40 28 000 4696 4140 140 0.82 26 621 970 906 840 704 62 412 176 4744 421 744 2 /4 128 0.82 2 670 64 69 6260 609 9 74 4 48 49 1197 0.82 22 7079 6729 66 68 62 61 869 480 4681 144 1.06 29 6840 6619 661 60 68 628 6128 924 8 1 4680 2 1 1414 1.09 26 778 7117 7049 6979 684 668 62 6268 801 247 4664 117 1. 2 7789 7474 790 7 7126 696 67 640 799 011 17 0.7 2 4927 441 4440 49 4129 899 64 188 24 1 / 1111 0.7 19. 4 01 4890 4764 449 4177 819 2 964 0.7.1 76 1 499 4826 4460 4048 68 11 0. 1 642 8 221 14 497 4774 480 429 600 24 1 /2 1272 0. 24 66 882 769 69 49 6 4942 4491 2 1 0. 19.7 694 6066 929 790 00 18 484 4262 17 0.82 41 6460 6170 609 60 868 71 6 8 484 4282 24 24 /4 146 0.82 1 722 686 677 668 6464 6272 6074 74 092 4287 2 126 0.82 2 71 709 697 686 661 661 6092 61 481 1929 1. 0 78 6846 6779 6711 674 64 629 6079 694 27 474 24 1 02 1. 7 7979 7619 729 749 7260 708 6911 669 611 00 476 2 190 1. 29 8 7896 7790 768 746 724 7014 6646 9 12 2 1 / 81 0.7 1. 460 021 4899 4770 4481 4094 81 2 1 /2 91 0..4 622 877 77 670 447 199 4897 4278 2 /4 66 0.82 19.9 719 686 671 666 6479 6286 6078 71 481 2 1 117 1. 2 7877 787 711 74 7272 7 6927 6641 60 2 1 0 0.7 17 12 4740 464 40 466 414 878 221 / 4 766 0.7 14 7 09 49 479 418 414 878 221 1 1148 0. 22 897 447 60 196 06 4864 44 /2 4 877 0. 17 68 6000 864 728 426 492 424 114 0.82 27 670 642 64 6277 6124 981 842 624 10 490 /4 4 04 0.82 22 748 7019 6898 6778 641 628 940 112 1447 1. 1 74 714 7072 7002 6861 6724 69 640 609 92 4896 1 4 1 1. 26 828 78 7708 798 781 74 6929 644 609 92 4896 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. WWW.TCF.COM 17

PERFORMANCE DATA LHB HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level 1 Performance Max RPM L1 = 696 Max Motor Frame Size = 14T Outlet Area (ft 2 ) =.02 40 0.22 7.4 6604 4806 /4 4 0.2 7.9 6849 179 4 0.28 8.4 7061 482 4848 444 0. 8.4 7240 729 19 / 460 0. 8.9 701 6080 7 47 0.7 9.4 7746 6402 919 29 L1 1 0.4.8 86 72 6769 6 /2 29 0.0 11.4 8626 741 711 6684 46 0. 12.2 8904 788 7477 7066 6087 84 0.6 1.4 92 86 8278 7889 7082 --- /4 60 0.7 14. 9866 901 870 88 784 66 62 0.8 1. 192 980 91 8761 808 7192 64 0.91.0 48 9706 9448 91 844 7668 666 1.00 17.0 860 117 988 9601 891 82 780 687 1. 18.1 11 490 272 01 980 8721 7940 Level 2 Performance Max RPM L2 = 90 Max Motor Frame Size = 184T Outlet Area (ft 2 ) =.02 84 0.6 1.4 92 86 8278 7889 7082 --- /4 60 0.7 14. 9866 901 870 88 784 66 62 0.8 1. 192 980 91 8761 808 7192 L2 1 /2 --- 2 64 0.91.0 48 9706 9448 91 844 7668 666 1.00 17.0 860 117 988 9601 891 82 780 687 1. 18.1 11 490 272 01 980 8721 7940 76 1. 21 2 1149 1118 946 41 9800 9172 8002 762 1.0 21 12426 11800 1 1142 94 7 9766 8717 787 1.6 22 128 1222 1 11878 11442 891 19 978 8 1.8 24 19 12628 12464 12290 11887 1176 8 990 89 2.00 2 1681 1124 12969 1280 1247 1197 1147 627 866 2. 26 14122 18 146 1280 1298 1218 11 1122 9697 Belt Driven, LHB Level Performance Max RPM B = 16 = 16 E8 = 97 Z = 129 Max Motor Frame Size = 184T Outlet Area (ft 2 ) =.02 964 0. 22 8186 769 740 72 6869 6487 6081 2 2 1 /2 871 0. 18.2 8686 7967 7769 761 7121 660 6114 4949 799 0.. 8986 8148 7909 76 79 6 418 14 0.8 2 97 8844 8704 860 8260 7946 7618 70 604 2 /4 997 0.82 22 994 926 91 8990 86 8247 7842 7188 914 0.82 21 280 964 967 9 872 8248 772 664 B 121 1. 28 18 989 9714 986 922 9047 8761 812 7499 649 2 1 98 1. 26 90 96 249 098 978 944 9 8 7461 06 1. 2 1114 672 499 21 9944 96 9 8428 190 1.6 4 11804 1189 11282 1117 90 7 48 11 9460 8761 79 2 127 1.6 126 17 1192 1180 114 11270 98 6 97 8822 72 112 1.6 28 1297 1240 1227 128 11798 11470 11122 66 984 7781 1 2. 9 1299 12618 1221 12424 1222 121 11812 11488 9 19 9682 8117 2 2 18 2. 179 160 1248 114 12901 12661 1241 12 111 91 979 1268 2. 2 14261 1762 162 1499 1226 12941 1264 127 119 401 8701 141. 9 19 1887 177 1662 14 1192 14947 1462 1872 112 124 964 98 0. 22 74 6667 624 678 6070 76 68 4671 24 1 /2 827 0..8 8070 77 7192 7008 6611 614 78 2 717 0. 14.1 849 7677 7424 716 688 869 48 112 0.82 27 824 7781 7660 76 7280 701 6729 6264 260 24 /4 946 0.8 21 921 8627 8470 81 7992 7649 7261 671 2 8 0.8 17.1 9777 90 8829 8612 8148 764 7097 877 128 1. 1 907 86 846 84 89 797 771 742 6606 609 24 1 41 1. 2 18 9612 9471 929 9042 8748 84 7901 677 2 90 1. 767 2 9922 97 9 8907 849 768 1417 1.6 40 8 022 9929 984 9642 9444 9241 8927 862 7729 24 1192 1.6 2 12 1118 16 914 66 41 1 9762 8991 802 692 2 4 1.6 2 1228 1176 10 1140 11124 778 4 982 870 6977 160 2.19 48 114 11 121 96 764 88 408 11 9648 912 846 24 2 112 2. 9 1280 127 12264 1214 119 11704 11477 111 07 977 8891 2 118 2. 168 1 12918 12780 12496 12196 11880 1178 48 970 7798 24 102. 1 1467 1428 14188 1409 1900 1706 109 1211 12707 128 1161 07 28 191. 4 114 14728 1462 14 147 14089 1866 121 1291 1226 1172 9611 2 12. 42 124 1077 14961 14844 14604 146 14099 1691 12962 12188 1119 862 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. 18 TWIN CITY FAN - CATALOG 4860

PERFORMANCE DATA Belt Driven, LHB LHB (cont.) HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level Performance Max RPM = 16 E8 = 97 Z = 129 Max Motor Frame Size = 184T Outlet Area (ft 2 ) =.02 2 1 /2 61 0. 14.7 7991 741 7284 7086 660 87 267 E8 2 /4 704 0.82 18. 9147 869 862 8421 808 761 7087 64 2 1 77 1. 21 070 966 92 94 9171 884 8428 7667 64 2 887 1.64 26 112 11179 18 988 781 4 292 9786 8682 788 2 2 976 2.19 29 12682 1270 12287 122 12 1182 12 11261 47 967 897 1 814 0. 17. 860 7711 726 727 6889 6406 829 /2 4 68 0. 14.2 8907 7922 7661 777 67 92 0.82 22 971 9018 8866 8708 86 798 777 687 Z /4 4 782 0.82 17.9 198 94 9124 8900 8411 7862 26 1. 26 7 040 9907 9769 9477 918 8812 82 7098 1 4 860 1. 21 1121 440 242 04 961 917 8672 117 1.6 2 7 19 1126 11411 11172 919 647 6 99 84 4 98 1.64 26 1284 1217 1 11828 11481 1112 78 129 2.18 7 1279 1289 12792 12689 12478 1229 128 16 970 214 9 2 4 84 2.19 1417 128 17 12 12901 128 1229 11729 718 4 1241. 7 184 16 1 18 1111 1486 1461 14140 172 1212 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. WWW.TCF.COM 19

PERFORMANCE DATA 6 LHB HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level 1 Performance Max RPM L1 = Max Motor Frame Size = 14T Outlet Area (ft 2 ) = 7.217 2 0. 8. 9071 674 / 44 0. 9.1 998 696 08 0.6 9.2 9699 74 898 81 0.4.2 409 8414 7624 86 /2 9 0.0.9 792 892 8219 6942 407 0. 11.7 111 980 8691 7829 L1 --- /4 46 0.68 1.2 11912 44 9778 916 6444 42 0.7 1.9 1249 996 74 976 7680 466 0.8 14.8 1272 11462 897 282 8794 480 0.90 1.4 1114 11914 11409 799 9 68 497 1.00. 179 12449 8 1144 290 7960 1 1. 17.0 140 12942 12 1 924 9224 Level 2 Performance Max RPM L2 = 671 Max Motor Frame Size = 184T Outlet Area (ft 2 ) = 7.217 480 0.90 1.4 1114 11914 11409 799 9 68 497 1.00. 179 12449 8 1144 290 7960 1 1. 17.0 140 12942 121 1 924 9224 L2 49 1. 19.1 14999 1402 1711 111 12276 11228 906 1 /2 69 1.0 118 1488 14299 1949 12982 11997 81 87 1.6 21 08 1147 14877 1464 1692 12727 161 7990 60 1.80 22 29 167 1417 112 14 1400 1240 946 --- 2 626 2.00 2 17 28 042 1780 1097 14176 1290 111 646 2. 2 17649 861 6 86 1781 1492 140 1218 Level Performance Max RPM B6 = 19 = 19 E8 = 91 Z = 9 Max Motor Frame Size = 184T Outlet Area (ft 2 ) = 7.217 844 0.82 27 11429 681 474 26 9784 9264 8707 7728 2 /4 761 0.8 2 12229 1128 17 806 219 97 8882 7197 692 0.8 22 1277 11 1129 9 9 9424 777 929 1. 1 1281 119 11728 1140 1118 700 22 9464 7870 2 1 87 1. 27 141 12644 1242 12192 196 11148 9 991 761 1. 2 14007 10 12727 124 11802 11112 98 8097 B6 E8 Belt Driven, LHB 64 1.6 9 14409 182 1679 122 119 12846 12474 11868 76 940 2 98 1.6 19 14702 1417 1426 1926 149 1 1227 82 872 1.66 1 00 1192 14961 14722 14217 1669 179 12148 9006 1171 2. 46 188 18 12 106 1477 14474 1417 1646 12706 17 42 2 2 2. 9 94 6 1998 1648 1279 14887 1421 184 189 99 2. 6 1761 879 674 464 02 17 107 1420 128 140. 7 18146 17696 1779 17461 17219 968 709 1 160 1474 1868 1178 2 17. 0 1996 1887 18717 1874 18281 17976 1769 1716 2 1217 141 98. 4 2 194 1968 19191 1882 1844 1804 1740 2 14998 1241 12.1 60 296 2407 2264 2119 22822 2217 224 21714 88 19881 18860 228 878 0.82 2 111 2 9990 976 9297 878 8211 72 28 /4 78 0.8 2 12487 11419 118 777 096 9412 8601 680 2 687 0.82 22 12728 1127 11196 847 074 97 807 966 1. 29 1224 1141 117 102 89 19 9689 8904 28 1 812 1. 2 1740 12786 1221 1227 129 11 90 929 2 76 1. 2 14006 129 1269 127 192 966 17 8611 1.6 7 14007 1294 111 1292 1272 12212 11844 11248 112 28 9 1.6 29 176 14918 14699 14472 1982 14 12911 126 477 2 86 1.6 29 026 1099 148 14601 14077 117 12907 11868 964 1217 2. 4 141 1476 14602 1448 149 1782 146 1292 118 949 28 2 2 2. 2 17 74 79 179 1760 16 1482 14086 1289 11229 2 92 2. 2 1768 802 8 9 1899 14 14906 14069 124 176 19.29 7 17642 17077 9 792 06 219 192 10 14772 1964 167 28 1172. 40 1981 1919 19029 18861 181 1810 1776 17142 071 14996 176 2 90. 7 194 19471 19284 19094 18704 18 17888 172 0 1498 12889 28 189.47 4 20 22971 228 22696 22414 22124 21827 218 07 1960 18706 777 2 1292.47 49 297 22 2176 2 22701 2276 24 21 6 1961 1860 1949 2 /4 7 0.8 18.4 118 96 706 442 989 9147 822 2 1 6 1. 22 149 12246 127 11800 1112 76 11 88 2 724 1.6 28 1492 142 1401 1861 146 142 1282 11782 992 2 2 797 2. 2 4 1808 164 1477 11 14766 1480 1749 1244 96 2 91. 8 18821 18284 18144 18002 17711 174 17096 602 1688 1478 114 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. TWIN CITY FAN - CATALOG 4860

PERFORMANCE DATA Belt Driven, LHB 6 LHB (cont.) HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level Performance Max RPM = 19 E8 = 91 Z = 9 Max Motor Frame Size = 184T Outlet Area (ft 2 ) = 7.217 688 0.82 18.8 12186 11266 10 72 111 946 864 /4 4 76 0.82 1.1 1297 114 1117 776 987 78 1.09 22 1426 1260 1279 12142 12 1 441 94 1 4 64 1. 17.9 14240 12978 126 12 1179 712 Z 867 1.64 27 17 1461 14462 14268 186 1406 12921 1217 0 1 1 /2 4 726 1.6 22 6 12 149 14649 14068 142 1272 94 2.19 2 898 262 09 192 166 118 1477 149 12881 111 2 4 799 2.19 26 17946 94 699 446 19 197 14809 1841 9.26 40 1960 18811 18668 182 18224 17914 1788 1706 2 104 1811 4 91. 2 1 19690 19470 19248 18804 187 17898 171 174 4 8.49 4 2470 2647 246 2279 22906 221 2217 2189 82 1944 18098 42 LHB HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level 1 Performance Max RPM L1 = 411 Max Motor Frame Size = 14T Outlet Area (ft 2 ) = 9.794 27 0. 7.0 94 / 266 0. 7.4 1117 6009 27 0.6 7.8 11700 70 29 0.4 8.8 121 900 648 /2 0.0 9.2 12977 976 77 1 0. 9.8 1402 77 8627 L1 --- /4 7 0.68.9 148 140 642 8607 49 0.7 11.6 14849 122 114 9896 61 0.8 12.4 19 1297 121 1 71 0.90 1.2 178 106 12690 11781 7888 8 1.00 1.9 80 14272 1469 12661 9492 97 1. 14.1 891 14921 14126 166 76 Level 2 Performance Max RPM L2 = 70 Max Motor Frame Size = 184T Outlet Area (ft 2 ) = 9.794 71 0.90 1.2 178 106 12690 11781 7888 8 1.00 1.9 80 14272 1469 12661 9492 97 1. 14.1 891 14919 14126 166 76 42 1. 1.9 18082 71 1660 1494 174 00 1 /2 440 1.0 17.0 187 17119 47 17 144 127 44 1.6 18.0 19 17802 172 1178 117 961 L2 468 1.80 19.0 19912 18472 17940 17288 1980 144 1124 --- 2 484 2.00 19.8 92 19227 18747 181 872 19 12942 00 2. 21 2127 19971 19 18998 1770 2 14692 2.70 24 22762 2174 219 77 19667 1824 1726 186 ---.00 2 261 22479 2214 217 7 19626 1829 002 72. 26 246 224 22927 2268 27 1904 1784 6 4.0 27017 2606 2786 200 2484 297 22976 211 17818 --- 67.00 2 279 27029 2677 2602 289 2122 24184 2278 02 1408 679.0 28889 28000 277 27498 2697 26241 281 2996 219 60 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. WWW.TCF.COM 21

PERFORMANCE DATA 42 LHB (cont.) Belt Driven, LHB HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level Performance Max RPM B4 = 96 = 96 E8 = 660 Z = 870 Max Motor Frame Size = 21T Outlet Area (ft 2 ) = 9.794 76 1. 26 7 1214 14824 144 169 12711 11821 4 2 1 666 1. 2 17071 1448 14974 1448 148 12429 1127 6 1. 22 17187 1246 14682 14 12888 11 842 1.6 2 1899 17806 1748 17147 49 1699 149 1798 1170 B4 2 76 1.6 29 197 18189 17798 1790 8 1667 14776 1 698 1.6 27 19667 1801 1760 17072 067 1027 176 11269 927 2. 8 87 19842 1960 19266 18649 17998 172 8 1449 12600 2 2 89 2. 4 210 287 19944 1987 1889 1806 1726 07 1727 768 2. 2 29 186 1977 1944 1841 17 89 1480 2 961.1 4 2462 29 29 21 229 21744 268 01 18248 26 180 880. 9 2479 264 2219 22862 22119 2141 4 192 786 670 1. 14894 161 129 126 128 168 847 28 1 69 1.09 1.8 8 14682 14270 1840 1299 11927 27 2 2 1.09 1.2 24 14844 1464 1860 12777 1197 987 767 1.6 2 1700 198 1669 1404 14876 1419 1712 12698 28 62 1.6 1827 1726 912 7 1812 1029 1419 1281 2 609 1.6 19.1 1891 17486 17090 678 180 14869 1788 106 84 2.19 29 18784 17772 172 17279 800 18 1812 14981 127 28 2 717 2. 2 74 192 18926 1861 17961 1727 61 1411 1266 2 670 2.19 2 8 1929 19181 18821 18062 1728 404 1489 967.28 21496 6 91 172 1974 1924 18906 1827 1704 164 1699 28 821.29 29 229 2241 28 218 21276 709 118 19194 1724 1179 2 767. 28 2822 22719 22428 22128 2102 842 10 1908 870 1769 2 909.1 282 2714 2707 268 264 2814 2274 24426 2292 21249 19072 E8 2 1 4 1.09 1. 16 141 141 172 1278 110 91 2 1 /2 21 1.6 17.4 17900 98 687 9 1696 1486 188 1228 2 2 7 2. 21 19687 18846 18611 186 17812 17147 77 14991 126 2 66. 26 229 21818 224 21422 99 19 19969 19001 17008 1498 604 1.07 19.7 128 1412 184 161 12976 1219 1170 022 1 4 467 1. 18.6 94 14 1467 194 1219 691 1.61 24 1742 464 217 1971 1478 14969 14419 1481 11247 4 4 1.6 2 1977 17799 1772 918 180 1446 Z 761 2. 28 19198 1822 18099 17874 17427 979 1760 14261 11974 2 4 88 2. 26 216 19917 1942 1914 188 17284 006 871. 2197 212 217 82 41 040 1960 1902 1796 672 14981 4 67. 1 244 2194 22874 2249 21874 2114 6 187 40 848.40 40 2811 2760 2772 2719 26674 26212 274 20 299 21727 19 4 798.49 40 2896 279 27668 27401 2687 26298 271 2476 2278 077 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. 22 TWIN CITY FAN - CATALOG 4860

Belt Driven, LHB 48 LHB PERFORMANCE DATA HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level 1 Performance Max RPM L1 = Max Motor Frame Size = 14T Outlet Area (ft 2 ) = 12.764 26 0.4 7.7 1482 8170 /2 24 0.0 8.2 1419 92 22 0. 8.6 189 606 L1 270 0.68 9.4 992 12808 098 --- /4 280 0.7.0 17621 171 1181 289 0.8.7 18188 14482 12921 000 297 0.90 11.1 18691 1142 189 11247 8 1.00 11.8 198 0 14887 12889 18 1. 12.4 01 824 1761 144 Level 2 Performance Max RPM L2 = 64 Max Motor Frame Size = 184T Outlet Area (ft 2 ) = 12.764 297 0.90 11.1 18691 1142 189 11247 8 1.00 11.8 198 0 14887 12889 18 1. 12.4 01 824 1761 144 40 1. 14.1 2197 186 177 40 129 1 /2 2 1.0 1.0 221 1908 18 1774 1412 64 1.6 1.9 22908 48 19477 1866 17 11401 L2 7 1.80.9 2600 21274 47 194 174 1214 --- 2 88 2.00 17.0 24418 22241 217 489 18686 119 400 2. 18.1 217 21 221 214 19744 1701 12704 429 2.70 26998 2172 2412 2727 22142 449 17214 --- 444.00 22 27942 26212 2612 24892 240 21797 191 162 48. 2 28824 27170 26618 298 2444 22986 21219 1980 08 4.0 27 1970 0 29606 2881 270 2701 2279 --- 26.00 28 1724 12 870 2979 2842 27 2099 1799 4.0 417 2846 2467 48 29778 282 26628 646 Level Performance Max RPM B4 = 2 = 2 E8 = 670 Z = 80 Max Motor Frame Size = 21T Outlet Area (ft 2 ) = 12.764 78 1.64 1 227 2171 2129 840 1988 18797 1771 06 2 662 1.6 28 2978 266 216 976 19766 18488 174 14868 98 1.6 2 2942 227 972 280 1880 17186 14609 812 2.19 6 2667 242 2848 241 22612 21701 74 1929 774 B4 2 2 729 2.21 26404 2469 24229 2746 22714 2196 4 18609 14640 68 2. 2644 2427 2706 29 2184 471 19004 1460 929. 46 296 28128 27802 27469 26779 2600 2271 24024 21874 19697 2 84. 41 7 2874 284 27942 27 266 2248 276 278 1784 170 74.1 7 188 28414 2799 27449 264 2 24140 221 1744 2 989.1 4 822 496 4277 92 284 290 1864 70 28617 2649 24070 89.0 0 7 4279 892 498 268 1829 9 2902 26966 249 7 1 /2 2 8.27 6 4098 9682 92 9017 81 7622 6887 72 662 144 2897 686 1.6 27 16 18671 181 17928 1717 12 187 182 28 79 1.6 2 22606 79 27 197 18647 1747 289 1812 2 6 1.6 22821 814 26 19684 1841 99 1267 7 2.19 1 2218 8 497 0 19480 18769 17998 729 28 2 67 2. 27 24871 22 22802 2229 214 60 199 176 2 90 2. 2 21 219 228 224 2126 077 18749 407 864.29 8 286 24211 2914 2618 229 2246 21826 844 1900 872 28 729. 2846 27078 2670 26 2494 246 2770 2247 1994 12 2 676.29 28782 2721 26822 26404 24 24608 2607 219 187 2.49 1 1 29128 28879 286 28129 2762 2716 2682 2046 260 21919 28 86.0 42 77 262 222 1 174 69 2998 28892 27081 216 22697 2 801.1 42 44 2811 247 21 148 71 2996 28764 261 2890 64 28 990 8.2 0 86 767 799 718 6604 6046 462 444 29 17 2974 267 2 7 1 /2 917 8.27 0 904 7921 76 741 6748 6140 44 280 860 28680 22984 E8 2 448 1.6 18.8 21421 1989 19470 19026 1801 88 144 2 2 49 2. 22 27 22 2182 21447 627 1971 18644 646 2 6.29 28 2701 289 226 26 248 2828 260 2174 1887 2 670.1 9 6 7 802 4 009 2946 28879 27961 26221 2402 21212 8 1.6 19.8 279 1 069 1999 1889 1749 244 4 448 1.64 1.9 22979 708 086 19417 17909 Z 9 2.17 2 246 2298 22 2211 21287 1961 1767 2 4 49 2. 18. 2287 229 22702 2216 908 1942 678.27 29 27824 26621 261 2970 2270 2417 2717 22444 1994 4 6.1 2 28981 272 26749 26287 27 24240 279 804.46 8 299 199 174 1468 9 4 2974 2876 27018 2069 22699 4 670.49 29 466 2870 2494 211 144 40 29678 288 4 7 1 /2 767 8.24 7 942 807 7708 780 6719 6047 6 427 2264 29708 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. WWW.TCF.COM 2

PERFORMANCE DATA 4 LHB HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level 1 Performance Max RPM L1 = 12 Max Motor Frame Size =14T Outlet Area (ft 2 ) =.126 222 0.68 8.4 1979 12694 --- /4 2 0.7 9.0 471 1461 0 27 0.8 9. 294 1 11880 L1 244 0.90.0 21717 26 17 2 1.00.7 2218 1766 12 1127 261 1. 11.1 22 1860 7 11 280 1. 12. 24921 760 1990 1722 1 /2 290 1.0 1. 2811 2186 90 19009 128 299 1.6 14.1 26612 228 2 262 148 Level 2 Performance Max RPM L2 = 467 Max Motor Frame Size = 184T Outlet Area (ft 2 ) =.126 280 1. 12. 24921 760 1990 1722 1 /2 290 1.0 1. 2811 2186 90 19009 128 299 1.6 14.1 26612 228 2 262 148 L2 --- 2 --- --- 8 1.80 14. 2741 2844 22647 2197 76 19 2.00 1.4 2892 201 2870 22709 19009 29 2..1 29282 261 24970 2861 997 1428 2 2.70 18.0 129 286 27498 264 2427 270 6.00 19.1 2486 29899 28914 2788 2829 22962 179 77. 4 19 0 29179 27222 24927 488 418 4.0 24 7 126 441 614 1786 0 28008 2218 4.00 26 88 66 92 181 47 179 2994 2217 447.0 27 9784 7898 76 6622 4981 0 1 281 Belt Driven, LHB Level Performance Max RPM B406 = 98 C = 98 C6 = 79 Z = 66 Max Motor Frame Size = 24T Outlet Area (ft 2 ) =.126 6 1.6 264 2429 2696 2111 21878 97 192 17068 2 02 1.6 28 2778 21 2466 2918 2279 748 18824 4 1.66 26 28221 274 2418 286 2147 1868 612 2. 4 28996 27122 26624 2611 209 2904 2279 2 17279 2 2 2.21 2 2891 27799 27181 2861 24440 2298 296 01 2.21 74 28 27827 27047 212 2281 42 700.29 42 146 1122 690 29799 28864 2788 266 281 627 B406 2 62. 8 4921 7 260 48 974 2982 28602 26680 2282 7.1 6 40 9 2801 2177 826 292 2764 241 8.0 92 797 7624 7271 60 808 042 841 17 2990 2741 2 70.0 0 41440 9894 9489 9077 8228 741 64 4928 2276 2969 2611 679.0 48 42114 404 9872 984 88 72 6062 4094 2997 90 8.2 69 40 486 4 422 426 41987 4144 40 8608 6768 4890 980 2 7 1 /2 88 8.26 64 47408 46067 47 469 4461 49 414 4194 979 7482 068 2877 778 8.28 60 482 467 46 4921 407 44182 4240 4172 8878 424 608 2 944.96 74 20 0947 06 0 49678 49021 4847 471 440 448 412 67 86 11.02 72 9 1717 19 0994 024 49467 486 4766 4002 422 9181 671 1.62 17. 2944 21214 96 196 17828 140 8 1.64 12.2 24891 214 68 198 1772 107 79 2.17 2670 2977 22 2211 980 19408 17898 16 2 9 2.17 14.1 2746 24427 267 2288 2127 19261 808 C 846.2 2 188 28179 279 26976 2682 242 22967 966 17671 678.27 17.9 169 2877 28087 279 26028 24624 21 042 0.44 791 4146 699 227 2212 111 06 2821 248 22689 199 804.4 2 7198 047 4481 906 2741 182 41 2860 24748 921 8.2 29 42611 4074 40269 9777 8776 779 6742 27 282 29281 2147 2 7 1 /2 867 8.26 41780 990 908 906 81 79 999 4198 88 26929 2 94 11.02 4 4972 44297 4896 449 42680 4182 40886 964 667 4 29847 40 1.6 14.7 22444 41 19969 1949 1841 17040 188 1841 444 1.6 11.2 2491 22 24 98 1941 17822 19 2 411 1.6.2 242 2197 2129 70 1908 87 9 2.17 17.0 247 2284 2244 21 2119 041 1886 17282 162 2 489 2.17 1.8 2748 2148 2427 2890 228 2121 19728 176 2 42 2.17 12. 27001 24612 24028 24 2214 698 18647 C6 681.24 21 284 2678 26219 2868 2 24400 2491 21947 19622 488 60.27 17.0 1421 2944 289 289 2728 26147 24972 28 2 18.27 1.7 944 2882 281 278 2676 266 24482 22128 807.44 29 41 1 89 178 780 191 2986 2866 2647 24412 22497 664.44 22 727 621 19 4760 86 2941 1994 4 27971 2090 2 614.4 6679 484 442 4009 171 229 174 2996 27072 299 760 8.2 28 4264 41224 4089 40489 972 892 811 69 4808 280 16 2 7 1 /2 70 8.24 26 4199 4062 9986 9618 8890 819 7408 621 4 1742 28288 86 8.6 46907 462 4294 44962 44286 49 4288 41790 99 797 94 1402 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. 24 TWIN CITY FAN - CATALOG 4860

Belt Driven, LHB 4 LHB (cont.) PERFORMANCE DATA HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level Performance Max RPM C = 98 C6 = 79 Z = 66 Max Motor Frame Size = 24T Outlet Area (ft 2 ) =.126 444 1.61 17.9 24142 2224 21770 210 277 1901 179 4 41 1.64 1. 26408 2 22294 21 489 2. 21 2689 2480 24426 24004 2141 22179 260 18946 2 4 7 2. 17.9 29041 26282 249 246 227 Z 60.24 2 449 289 280 28178 27441 26691 2890 24497 21441 4 429. 2 22 847 219 29 27969 28 2282 664.42 4 64 4824 40 4182 47 292 2 140 29499 272 24028 4 09.0 29 9419 7429 692 6407 21 409 292 2979 40 62 8.22 8 412 4624 42 42840 4 41196 4022 8919 6194 288 28274 4 7 1 /2 82 8.27 6 4072 46 42898 4247 417 4061 989 77 60 4 641 11.04 42 49641 48067 47670 47272 46469 4647 44788 481 4082 644 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. WWW.TCF.COM 2

PERFORMANCE DATA 60 LHB HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level 1 Performance Max RPM L1 = 0 Max Motor Frame Size = 14T 186 0.68 7.9 22728 178 --- /4 19 0.7 8.4 284 18 199 0.8 8.9 2417 149 0.90 9.0 200 17226 212 1.00 9. 2906 18967 1412 219 1..1 26761 28 6 L1 L2 1 /2 --- 2 2 1. 11.4 287 217 77 08 24 1.0 12.1 29694 24278 2288 18779 21 1.6 12.9 671 21 2804 276 28 1.80 1. 127 2679 24969 22868 268 2.00 14.2 2749 28089 2668 2487 180 276 2. 1.1 726 291 2781 262 411 Level 2 Performance Max RPM L2 = 99 Max Motor Frame Size = 21T 2 1. 11.4 287 217 77 08 1 /2 24 1.0 12.1 29694 24278 2288 18779 21 1.6 12.9 671 21 2804 276 28 1.80 1. 127 2679 24969 22868 --- 2 268 2.00 14.2 2749 28089 2668 2487 180 276 2. 1.1 726 291 2781 262 411 --- --- 296 2.70 17.0 6170 21 86 2948 2961 19066 6.00 18.0 792 766 269 1 28062 281. 18.6 8614 4 882 24 298 24867 0 4.0 22 42769 99 8888 7694 18 2806 284 6.00 2 447 464 407 961 7 006 1909 200 7.0 24 4824 426 42407 4197 9118 6940 4412 271 Belt Driven, LHB Level Performance Max RPM C = 9 C6 = 80 Z = 68 Max Motor Frame Size = 26T 679 2.17 21 28621 29 244 26 2194 1 184 11 2 2.19 17.7 646 27014 2978 248 2276 191 2 490 2.18 1. 2977 219 28 777.27 26 272 094 29264 28408 26861 249 2980 210 17404 612.27 22 06 194 219 28277 26121 2802 C 2 61.27 29 4087 0 291 27961 921.4 4 8822 6684 6076 412 981 2608 18 29608 260 22898 72.46 28 4129 8960 8280 781 6119 440 281 028 24128 2 66.4 24 40406 7190 60 46 78 168 6.07 41 44471 4268 42147 41 40488 9240 8000 640 747 694 2780 7 1 /2 8 8.17 4744 42 44744 441 42940 468 4026 812 4091 29212 2 761 8.18 4629 4429 42728 407 40461 882 706 914.92 41 2 01 4982 496 482 47117 4960 4412 40704 6964 2 2 88 11.00 0918 488 47729 47092 4766 449 4288 4080 47 2.18 21 277 201 24414 2774 2218 21 19971 1749 2 48 2.18.7 16 279 26467 26 2649 28 1986 2 401 2.18 1.2 978 277 264 2 29 214 626.26 26 114 294 28802 28246 27129 26026 24967 24 19684 10 02.26 22 462 1968 144 708 291 2781 276 2402 2 48.27 19. 81 24 147 18 28791 271 2 C6 742.42 6 74 8 079 4617 682 2740 1799 421 2814 2 2 9.44 29 4096 8747 82 7690 66 09 4229 199 2840 2 44.4 26 424 9682 8988 821 6618 701 119 26781 849 8. 4 42740 4117 4078 407 90 87 7911 6676 4666 2702 462 24786 7 1 /2 681 8. 46886 4496 44460 499 47 4210 41194 9606 61 24 214 2 622 8.1 2 4800 4601 40 4491 460 42192 408 891 764 171 1 82 11.0 1 491 474 471 46768 499 422 44478 48 414 908 672 2288 749 11.04 4 168 4979 492 489 48074 47240 46400 4090 4228 944 6687 2 68 11.04 7 2917 112 064 014 4901 4784 4648 4469 41896 8897 2 9 1.61.8 2784 2296 2471 28 2221 406 4 2 1.64 1.7 674 264 2072 24 4 2. 19.6 662 2892 27762 272 2706 2428 2292 2 4 2..1 82 07 28970 27749 Z 498.24 24 16 264 91 947 2972 28469 26426 4 81. 8698 490 462 690 182 28770 91.42 1 48 4004 96 9188 829 749 68 4801 46 2849 4 42.0 27 49 428 4248 4189 4029 86 6721 40 4 8.2 4 2142 01 49602 49097 48081 4709 4940 44074 4016 4747 4 7 1 /2 17 8.2 212 0187 499 4899 47761 4640 40 42624 67.98 44 40 918 0 176 2411 18 0792 49489 47149 449 41726 4418 40 608.91 40 722 76 49 4448 26 298 46 011 471 4287 8274 4 69 11.02 8 779 686 11 461 19 286 1192 49226 476 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. 26 TWIN CITY FAN - CATALOG 4860

Direct Drive, LHDF 21 LHDF SIZE 21 24 B E8 B E8 Z B E8 Z PERFORMANCE DATA HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Max RPM B = 170 = 170 E8 = 170 Max Motor Frame Size = 14T Outlet Area (ft 2 ) = 2.46 1 /2 170 0.4 27 11 292 2912 2872 2791 271 266 21 228 1 1796 1284 1 /4 170 0.68 29 426 41 4071 401 92 871 790 670 46 7 2874 1 170 0.98 29 2 6 12 08 001 4917 481 4700 4477 4218 846 229 2 170 1.26 6296 612 6081 607 947 8 760 61 64 084 4704 928 170 1.7 2 7177 6984 69 688 6782 6677 668 699 6099 761 7 49 12 1 170 0.40 22 844 98 7 477 8 2 90 287 22 /2 170 0. 24 482 4 429 42 49 977 89 624 196 /4 170 0.71 96 8 8 048 492 4794 468 444 4042 26 24 170 0.89 28 602 782 719 6 22 8 29 0 4629 4144 1 28 170 1. 28 66 67 69 6242 66 967 824 98 189 470 4072 2 170 1.4 29 7178 6921 684 6787 6649 606 67 6118 62 124 424 12 /4 170 0.68 22 71 82 48 1 442 68 291 9 299 2664 26 1 170 0.87 2 4626 4490 44 44 449 4277 44 4094 902 672 74 170 1. 2 1 76 41 6 2 4 092 4986 4811 46 47 24 170 1.4 27 61 6222 6189 61 6087 60 94 828 6 86 1 480 Max RPM B = 170 = 170 E8 = 170 Z = 170 Max Motor Frame Size = 184T Outlet Area (ft 2 ) =.7 /4 170 0.68 9 4 42 41 420 4148 4046 946 794 218 29 217 1 170 1.12 6 6267 6070 6021 971 869 767 664 08 244 4946 464 869 170 1. 78 7628 776 72 74 714 7 7040 6761 6466 6117 24 2 2 170 2.0 4 924 90 897 8919 8807 8692 876 896 8088 776 7404 6426 170 2.7 7 14 276 21 14 029 9901 9770 968 9214 88 8412 744 12 1 /2 170 0. 4 218 4909 4828 4744 468 484 4194 900 60 /4 170 0.80 66 620 6171 6092 91 767 98 1 489 4269 46 1 170 1.06 7 76 76 7260 7182 7021 682 6674 696 919 91 47 24 170 1.7 9 869 84 827 819 804 7868 7699 74 698 6421 8 28 170 1.70 4 961 926 9177 9098 894 876 888 811 782 76 6780 2 2 170 2.1 4 490 178 098 017 98 9686 914 9249 878 8296 776 12 1 170 0.98 9 9 00 009 4967 4879 4787 4689 427 42 871 07 170 1.4 9 66 6428 681 6 628 6142 6046 904 669 411 084 426 170 1.76 41 7971 7807 776 772 767 749 749 721 7080 682 68 778 2 24 170 2.22 44 97 902 8988 894 882 8760 8666 822 8276 8021 7747 701 1 /4 860 0.22 1.2 41 91 809 701 41 1 / 860 0.2 1.2 47 4608 4469 411 747 40 1 860 0.42 14.6 944 448 292 1 4777 446 8 /2 4 860 0.0 14.8 648 891 72 62 18 471 1 /2 10 0.4 22 869 42 460 78 222 066 4898 471 /4 10 0.77 2 6967 666 68 6499 621 6124 908 40 470 40 1 10 1.02 2 8017 7672 778 7481 7268 702 6764 690 684 4 10 1.24 26 8684 8297 8194 8088 786 76 78 6927 2 170 1.89 4 88 867 88 829 84 812 8 804 7786 722 72 61 Max RPM B = 10 = 170 E8 = 170 Z = 10 Max Motor Frame Size = 184T Outlet Area (ft 2 ) =.02 1 /2 10 0.41 28 74 22 124 4991 471 441 417 66 2626 18 671 1 /4 10 0.6 28 7972 747 744 721 6946 6672 680 881 49 1 10 0.96 27 9977 9460 926 9191 891 86 846 7870 6904 764 2 10 1. 27 1171 11214 17 9 644 47 042 9 891 7267 2 10 1.69 29 1292 127 1287 1249 121 11814 11481 948 99 84 12 /4 10 0.68 28 719 670 677 6446 617 891 97 112 1 10 0.92 27 8699 8192 8064 796 7680 7422 71 6719 82 10 1. 28 18 9687 970 940 94 8948 8680 821 7446 672 24 10 1.4 28 1142 2 98 811 1 282 001 98 8767 7746 6262 28 2 10 1.92 1 12969 12476 1248 12217 1191 17 1190 97 08 904 77 12 10 1.12 29 7067 6798 6727 66 60 647 6179 90 6 10 1.4 8689 844 868 80 80 8014 7862 761 7149 699 2 10 1.9 1 2 12 04 9896 977 976 942 890 8487 7774 1 /2 860 0.46 18.2 768 6901 6746 691 621 89 /4 860 0.6 18. 8997 849 8184 8021 7686 7287 6727 776 40 860 0.89 18.8 461 9724 927 92 8900 84 792 680 1 4 860 1.08 19.1 116 24 17 4 9660 9191 8712 10 1.14 28 9727 99 946 9224 8996 876 868 76 6297 10 1.60 28 121 161 1140 11418 11172 9 688 8 9484 849 40 2 10 2.17 29 141 176 148 1298 111 12717 12412 119 147 99 1. Performance shown is for installation type A: Free inlet, free outlet. 2. Performance ratings do not include the effects of appurtenances (accessories) in the airstream.. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. WWW.TCF.COM 27

PERFORMANCE DATA Direct Drive, LHDF 6 48 LHDF SIZE 6 42 48 B6 E8 Z B4 E8 Z B4 E8 Z HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Max RPM B6 = 10 = 10 E8 = 10 Z = 10 Max Motor Frame Size = 21T Outlet Area (ft 2 ) = 7.217 1 10 0.96 4 927 8692 84 896 809 7780 740 689 868 4690 9 120 1 10 1.4 44 1266 1217 1 11861 1174 11276 966 471 9487 860 6996 2 10 2.14 4 1876 141 12 1061 14771 14471 1418 1666 1274 12 12 2 10 2.9 46 18896 182 18174 1802 1771 1797 17067 49 1608 142 1186 10.90 49 21722 28 918 71 409 07 1969 19124 18097 94 166 12 1 10 1.04 7 978 9097 8924 872 8406 804 769 702 10 1.8 199 114 11290 11124 788 444 086 900 87 7011 2 10 1.86 9 14817 14226 14070 1911 180 1226 12849 1220 111 9908 84 24 10 2.44 9 17068 449 287 122 1781 14 108 1449 1424 121 90 28 10.1 42 1928 18694 1829 1860 1801 17646 1728 64 199 1401 17 12 2 10 1.84 9 999 941 9428 91 9088 8869 86 814 10 2.4 4 12786 12442 122 12260 9 11869 19 118 628 9921 911 10.1 47 1694 14 1241 1147 149 1479 146 14242 1684 166 128 418 860 1.1 24 114 12142 11949 11764 11400 1 72 9799 860 1.61 2 146 1487 1494 140 1819 14 1 126 429 40 2 860 2. 2 1777 91 690 461 1991 1497 14974 1414 1229 4 860 2.71 2 190 18248 18011 17771 17277 764 22 14 10 2.81 8 174 887 728 71 272 1992 1722 117 1470 1681 1290 Max RPM B4 = 860 = 860 E8 = 860 Z = 860 Max Motor Frame Size = 24T Outlet Area (ft 2 ) = 9.794 1 860 0.77 12608 11 1127 976 86 9724 8998 78 417 2918 1 860 1.22 2 81 1289 14990 14680 14029 148 1262 1108 909 2 860 1.7 1966 18 18222 17894 170 472 1726 14 128 2 860 2.7 6 224 21271 940 94 1986 19098 1812 17071 1482 860.08 9 2476 2494 2140 2277 211 218 7 1907 279 12 860 1.2 26 1480 129 1229 149 1142 108 448 948 2 860 1.77 26 9 17 119 1490 1442 1944 142 1286 24 860.0 29 2189 9 69 41 1991 1942 1889 18062 69 1497 28 860.80 24477 244 21 2 2242 212 21460 89 18992 17027 14682 2 860 4.7 2648 24 2288 2027 24496 2948 27 224 721 18708 29 12 2 860 2.22 24 1486 1299 12796 1261 121 19 1171 11187 860 2.88 26 718 219 088 19 1680 192 1086 1489 166 1297 860.89 29 1964 19489 194 19049 1870 1844 180 17228 2 1489 24 860 4.94 29 26 2269 226 22429 2214 21869 217 21112 271 19294 17972 149 860.1 2121 69 01 9 001 1967 1921 1829 1727 1917 19 860 4. 28 24889 24049 2866 2688 244 20 226 289 81 196 1786 Max RPM B4 = 860 = 860 E8 = 860 Z = 860 Max Motor Frame Size = 24T Outlet Area (ft 2 ) = 12.764 860 1.12 4 1761 04 1702 16 1462 1892 10 117 8992 264 2119 1 2 860 1.78 8 22801 21497 21149 791 09 19224 1866 99 14740 860 2.62 40 2784 2629 2882 21 24747 2914 21 21 1911 696 2 860.61 4 1707 277 29900 2914 28714 27864 2692 2497 22870 19908 860 4.89 47 174 602 19 2777 1922 11 28642 2814 2127 12 2 860 1.79 7 1709 1826 121 1217 14600 1948 124 189 860 2.7 248 1990 19612 1917 187 186 1747 9 14 11890 860. 40 2744 24682 24401 2411 211 22868 22189 211 191 886 1412 24 860 4.18 8 2988 28476 28184 27887 27266 26608 2922 2486 27 226 18421 28 860.40 44 4 229 1997 92 6 8 29681 289 26771 24761 22 12 860.14 40 1748 62 41 249 1849 1462 107 144 860 4.21 44 2244 21721 218 2190 244 680 29 19642 18411 1714 1724 860.6 4 2776 26728 2660 2691 26046 2691 226 2477 2744 22609 21241 17722 860 4.8 40 64 292 28962 28700 284 27727 2724 2627 217 2496 2188 1. Performance shown is for installation type A: Free inlet, free outlet. 2. Performance ratings do not include the effects of appurtenances (accessories) in the airstream.. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. 28 TWIN CITY FAN - CATALOG 4860

PERFORMANCE DATA Belt Driven, LHBF 21 LHBF HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level 1 Performance Max RPM L1 = 8 Max Motor Frame Size = 6 Outlet Area (ft 2 ) = 2.46 74 0.22 9.4 99 8 184 294 /4 760 0.2 9.9 416 8 68 2 784 0.28.4 4267 718 4 4 L1 80 0..6 481 87 677 49 8 / 8 0. 11. 44 4040 86 69 291 860 0.7 11.9 4681 421 4046 879 1 924 0.4 1. 029 4614 4469 411 996 6 /2 97 0.0 14.1 9 48 4682 42 42 891 988 0. 1.0 77 00 4878 477 444 41 76 Level 2 Performance Max RPM L2 = 1241 Max Motor Frame Size = 14T Outlet Area (ft 2 ) = 2.46 L2 /2 --- /4 924 0.4 1. 029 4614 4469 411 996 6 97 0.0 14.1 9 48 4682 42 42 891 988 0. 1.0 77 00 4878 477 444 41 76 8 0.6.9 78 419 12 190 4918 4646 440 96 0.7 18.1 96 642 42 4 17 49 46 412 111 0.8 18.8 616 84 72 647 40 10 4889 4428 Level Performance Max RPM B = 1890 = 1890 E8 = 1280 Max Motor Frame Size = 14T Outlet Area (ft 2 ) = 2.46 1142 0.27 1. 444 1 14 6 2914 271 270 227 2 1 /4 48 0.27 1.8 727 44 1 264 7 2860 260 2241 977 0.27 1.0 948 84 477 62 7 2812 2474 122 0.6 17.8 776 7 498 46 6 7 17 278 22 B 2 1 / 110 0. 1.9 4089 827 7 679 8 142 2796 72 0.6 1.0 42 4007 91 817 602 64 91 262 148 0.4 22 47 4149 4099 4048 942 829 711 21 149 2778 2 1 /2 1 0. 4694 4470 44 448 4217 4076 92 678 187 2696 121 0. 18.7 4974 4698 4622 444 476 4190 988 6 298 46 0.79 28 4964 4802 4760 4717 4628 4 448 4286 40 699 47 2 /4 111 0.81 2 7 180 129 077 4969 48 47 442 4184 748 6 1409 0.82 2 694 46 9 28 191 04 4888 46 414 62 1 0.27 14.0 811 0 421 7 1 2978 277 264 28 1 /4 11 0.27 12.7 418 792 690 84 1 86 2778 296 2 4 0.28 11.8 4288 87 697 67 2 4 262 2 1442 0.7.2 419 917 844 770 6 44 288 02 28 1 / 1228 0.7 14.8 460 4248 418 4066 869 61 4 2982 2 1148 0.7 1.9 47 428 44 4076 84 622 7 28 0 0. 4800 460 4497 444 44 4170 40 81 98 28 1 /2 1406 0. 18.4 270 4961 488 480 4644 4474 4289 984 66 2 114 0. 17.2 402 076 4978 4872 460 4447 42 94 148 1889 0.82 26 49 287 2 179 069 496 489 469 446 99 496 28 /4 0.82 22 60 766 698 629 492 7 4972 41 4004 21 2 104 0.82 21 6184 906 829 746 6 69 18 491 446 8 E8 2 1 /4 886 0.28.4 976 649 6 478 277 2999 268 2 1 / 97 0.7 12.2 47 4079 400 927 766 72 2878 2 1 /2 11 0. 1.0 008 471 468 4619 4486 446 4190 88 242 2 /4 1277 0.8 19.1 7 07 40 92 277 1 041 4846 440 89 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. WWW.TCF.COM 29

PERFORMANCE DATA 24 LHBF HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level 1 Performance Max RPM L1 = 907 Max Motor Frame Size = 6 Outlet Area (ft 2 ) =.7 87 0.22 8.8 4872 98 668 277 /4 608 0.2 9. 046 42 917 6 628 0.28 9.9 212 442 4144 8 644 0.. 4 49 421 40 / 667 0..8 6 486 470 42 689 0.7 11. 718 061 4807 41 942 L1 /2 --- /4 740 0.4 1.0 6142 64 47 7 4609 767 0.0 1.6 666 821 62 96 491 462 791 0.9 14. 66 6046 866 62 4 4682 847 0.6.1 70 68 6408 62 817 90 4871 877 0.7 17.0 7279 6828 6691 629 619 76 269 906 0.8 18.0 7 7087 699 6811 6448 609 641 Level 2 Performance Max RPM L2 = 986 Max Motor Frame Size = 14T Outlet Area (ft 2 ) =.7 740 0.4 1.0 6142 64 47 7 4609 /2 767 0.0 1.6 666 821 62 96 491 462 791 0.9 14. 66 6046 866 62 4 4682 L2 847 0.6.1 70 68 6408 62 817 90 4871 --- /4 877 0.7 17.0 7279 6828 6691 629 619 76 269 906 0.8 18.0 7 7087 699 6811 6448 609 641 92 0.91 19.1 77 718 7197 7060 6722 642 9 28 966 1.00 8018 7619 704 779 7072 6707 64 698 997 1.06 21 827 7891 7782 766 784 7040 6687 67 Level Performance Max RPM B = 19 = 19 E8 = 117 Z = 140 Max Motor Frame Size = 14T Outlet Area (ft 2 ) =.7 67 0. 17.9 4727 49 44 49 4008 791 4 11 2 1 / 977 0.6 1.7 098 470 492 447 4222 94 614 1 9 0.6 14. 82 4900 4760 4611 428 917 446 1226 0. 22 41 147 072 499 4829 466 4472 4174 99 B E8 Z 2 1 /2 1122 0. 19.1 8 18 427 2 1 4911 4676 4278 26 Belt Driven, LHBF 4 0. 18.0 6180 772 69 40 28 000 4696 4140 140 0.82 26 621 970 906 840 704 62 412 176 4744 421 744 2 /4 128 0.82 2 670 64 69 6260 609 9 74 4 48 49 1197 0.82 22 7079 6729 66 68 62 61 869 480 4681 144 1.06 29 6840 6619 661 60 68 628 6128 924 8 1 4680 2 1 1414 1.09 26 778 7117 7049 6979 684 668 62 6268 801 247 4664 117 1. 2 7789 7474 790 7 7126 696 67 640 799 011 17 0.7 2 4879 4497 498 4298 4089 860 606 10 24 1 / 1111 0.7 18.2 40 4949 4826 4702 44 4114 760 2 964 0.7 1.2 661 06 4907 4741 479 976 11 0. 29 86 26 171 084 4909 4728 44 421 7 24 1 /2 1272 0. 2 6240 800 692 8 68 1 4869 4422 2 1 0. 19. 6477 961 827 690 40 089 4744 417 17 0.82 40 697 61 606 962 811 69 0 26 4792 422 474 24 /4 146 0.82 29 714 678 6662 667 680 6192 99 660 014 2 126 0.82 24 7417 6969 684 677 600 620 98 46 4704 1929 1. 48 709 6779 671 6646 611 67 62 6021 66 1 4688 24 1 02 1. 6 789 7 7422 7 7 699 6822 649 602 41 4679 2 190 1. 28 8 778 764 749 77 7119 6892 626 844 2 1 / 81 0.7 1.0 9 497 484 470 4411 4011 494 2 1 /2 91 0. 1.8 6178 80 701 96 7 121 4807 4189 2 /4 66 0.82 19. 7074 672 6666 678 69 62 991 614 4728 2 1 117 1. 22 7784 7494 7417 740 7178 70 684 644 9 07 1 0 0.7 17. 09 469 4600 4 426 49 826 / 4 766 0.7 1. 608 008 4849 4661 4049 1 1148 0. 22 829 478 92 9 11 4992 48 4477 /2 4 877 0..9 6421 897 766 61 11 4788 114 0.82 26 6672 664 6288 621 6066 928 791 71 084 40 /4 4 04 0.82 21 71 6894 6779 666 64 619 771 49 1447 1. 748 7067 6997 6929 6792 6661 66 649 99 17 4798 1 4 1 1. 24 8090 7678 771 7467 729 7042 6794 6247 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. TWIN CITY FAN - CATALOG 4860

PERFORMANCE DATA Belt Driven, LHBF LHBF HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level 1 Performance Max RPM L1 = 696 Max Motor Frame Size = 14T Outlet Area (ft 2 ) =.02 40 0.22 7.4 692 4788 /4 4 0.2 7.9 686 2 4 0.28 8.1 7047 464 481 444 0. 8.4 7226 711 121 / 460 0. 8.9 7487 6061 7 47 0.7 9.4 771 682 899 L1 1 0.4.7 849 718 6748 6289 /2 29 0.0 11.4 86 71 7091 6662 46 0. 11.9 8886 788 742 7044 6064 84 0.6 1.4 90 89 820 7864 708 --- /4 60 0.7 14. 9847 8988 8677 8 79 6627 62 0.8 1. 172 96 9072 871 8012 76 64 0.91.0 46 9682 94 94 8408 769 666 1.00 17.0 89 09 98 970 890 87 72 687 1. 18.0 11181 46 24 9984 949 8694 7911 Level 2 Performance Max RPM L2 = 90 Max Motor Frame Size = 184T Outlet Area (ft 2 ) =.02 84 0.6 1.4 90 89 820 7864 708 --- /4 60 0.7 14. 9847 8988 8677 8 79 6627 62 0.8 1. 172 96 9072 871 8012 76 L2 1 /2 --- 2 64 0.91.0 46 9682 94 94 8408 769 666 1.00 17.0 89 09 98 970 890 87 72 687 1. 18.1 11181 46 24 9984 949 8694 7911 76 1. 11979 112 1111 9 80 9770 9142 7967 762 1.0 21 12402 11774 1192 119 9 2 976 8686 787 1.6 22 12809 12 1 11848 11406 84 287 94 8 1.8 24 118 12600 124 12260 1182 118 78 99 89 2.00 24 16 19 1299 12774 12402 119 1199 9 866 2. 26 14094 1 1406 1249 1290 12478 11972 11197 9662 Level Performance Max RPM B = 16 = 16 E8 = 97 Z = 129 Max Motor Frame Size = 184T Outlet Area (ft 2 ) =.02 964 0. 22 8186 769 740 72 6869 6487 6081 2 2 1 /2 871 0. 18.2 8686 7967 7769 761 7121 660 6114 4949 799 0.. 8986 8148 7909 76 79 6 418 14 0.8 2 97 8844 8704 860 8260 7946 7618 70 604 2 /4 997 0.82 22 994 926 91 8990 86 8247 7842 7188 914 0.82 21 280 964 967 9 872 8248 772 664 B 121 1. 28 18 989 9714 986 922 9047 8761 812 7499 649 2 1 98 1. 26 90 96 249 098 978 944 9 8 7461 06 1. 2 1114 672 499 21 9944 96 9 8428 190 1.6 4 11804 1189 11282 1117 90 7 48 11 9460 8761 79 2 127 1.6 126 17 1192 1180 114 11270 98 6 97 8822 72 112 1.6 28 1297 1240 1227 128 11798 11470 11122 66 984 7781 1 2. 9 1299 12618 1221 12424 1222 121 11812 11488 9 19 9682 8117 2 2 18 2. 179 160 1248 114 12901 12661 1241 12 111 91 979 1268 2. 2 14261 1762 162 1499 1226 12941 1264 127 119 401 8701 141. 9 19 1887 177 1662 14 1192 14947 1462 1872 112 124 964 98 0. 21 7197 6660 617 670 606 729 61 4664 24 1 /2 827 0..8 807 761 7181 6998 6601 614 67 2 717 0. 1.7 8 7661 7408 7141 674 8 484 112 0.82 27 827 777 761 727 7272 700 6721 626 22 24 /4 946 0.8 21 9217 8614 847 80 7980 767 7249 69 2 8 0.8 17.1 979 9017 8811 894 81 769 7082 861 128 1. 1 9064 864 87 8426 8199 796 7722 7 697 601 24 1 41 1. 2 142 997 947 91 9028 87 8422 7888 6742 2 90 1. 747 082 9902 971 91 8888 8441 766 1417 1.6 40 7 012 9918 982 961 94 921 89 82 7719 24 1192 1.6 2 114 11140 119 897 649 400 146 9747 8976 8009 6941 2 4 1.6 2 126 1174 1182 11427 112 7 88 9812 8684 6948 160 2.19 48 11422 19 109 924 72 76 96 1 966 9112 8 24 2 112 2. 9 1278 124 1224 121 11912 186 11460 1111 490 978 887 2 118 2. 14 128 1289 127 12471 12171 118 11 464 94 7772 24 102. 1 1464 14261 146 14071 1879 168 1488 1191 12688 1210 1142 07 28 191. 44 19 14704 14600 14496 1428 1406 1842 1498 1289 12244 112 98 2 12. 42 149 1048 149 1481 1476 1428 14070 166 1294 12 1129 88 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. WWW.TCF.COM 1

PERFORMANCE DATA LHBF (cont.) Belt Driven, LHBF HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level Performance Max RPM = 16 E8 = 97 Z = 129 Max Motor Frame Size = 184T Outlet Area (ft 2 ) =.02 2 1 /2 61 0. 14.7 798 7441 727 707 646 861 28 E8 2 /4 704 0.82 17.9 918 8682 81 8409 8070 761 7069 619 2 1 77 1. 21 060 964 940 9421 917 8828 8409 7647 6404 2 887 1.64 2 111 116 172 974 767 9 274 976 8660 77 2 2 976 2.19 29 12669 126 1227 12187 8 118 108 11241 41 944 88 1 814 0. 17. 848 7699 714 71 6877 694 8 /2 4 68 0. 14.2 8886 7904 764 79 67 92 0.82 22 98 900 88 869 81 7971 76 6860 Z /4 4 782 0.82 17. 174 921 9 8880 890 7841 26 1. 2 22 026 9892 97 946 9142 8796 827 7081 1 4 860 1. 21 11189 4 219 021 9609 910 8649 1 117 1.6 2 10 122 11 1194 111 902 6 188 977 896 /2 4 98 1.64 26 1281 1214 1197 11801 114 197 711 078 129 2.18 7 1260 12874 12774 12671 12460 12241 1 17 90 194 929 2 4 84 2.19 14 1497 141 118 12872 127 1221 11701 687 4 1241. 7 146 1618 1484 149 1076 1480 1429 148 19 12478 6 LHBF HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level 1 Performance Max RPM L1 = Max Motor Frame Size = 14T Outlet Area (ft 2 ) = 7.217 2 0. 8.1 8949 601 / 44 0. 8. 9272 6744 4807 0.6 9.1 968 7219 6 81 0.4.2 269 8 762 79 /2 9 0.0.9 647 870 7994 67 407 0. 11.2 970 9128 8469 748 L1 --- /4 46 0.68 12.4 1172 11 9 8891 6147 42 0.7 1. 1218 708 098 9 711 466 0.8 14.1 1260 11182 91 026 8299 480 0.90 14.9 1298 142 186 28 92 6294 497 1.00 1.8 196 12187 18 11128 002 780 1 1..8 1827 12688 122 191 642 869 Level 2 Performance Max RPM L2 = 671 Max Motor Frame Size = 184T Outlet Area (ft 2 ) = 7.217 480 0.90 14.9 1298.0 142.0 186.0 28.0 92.0 6294.0 497 1.00 1.8 196 12187 18 11128 002 780 1 1..8 1827 12686 1222 191 642 869 L2 49 1. 18.6 14797 1776 1414 1296 11969 89 862 1 /2 69 1.0 19.7 17 1467 1404 167 12677 11722 04 87 1.6 21 1822 14892 1496 1421 1 12407 1122 769 60 1.80 22 7 1414 119 14809 1947 166 192 901 --- 2 626 2.00 2 87 019 176 1466 14686 18 12946 49 646 2. 24 17412 91 0 079 174 1419 1702 1192 Level Performance Max RPM B6 = 19 = 19 E8 = 91 Z = 9 Max Motor Frame Size = 184T Outlet Area (ft 2 ) = 7.217 844 0.82 27 11429 681 474 26 9784 9264 8707 7728 2 /4 761 0.8 2 12229 1128 17 806 219 97 8882 7197 692 0.8 22 1277 11 1129 9 9 9424 777 929 1. 1 1281 119 11728 1140 1118 700 22 9464 7870 2 1 87 1. 27 141 12644 1242 12192 196 11148 9 991 761 1. 2 14007 10 12727 124 11802 11112 98 8097 B6 64 1.6 9 14409 182 1679 122 119 12846 12474 11868 76 940 2 98 1.6 19 14702 1417 1426 1926 149 1 1227 82 872 1.66 1 00 1192 14961 14722 14217 1669 179 12148 9006 1171 2. 46 188 18 12 106 1477 14474 1417 1646 12706 17 42 2 2 2. 9 94 6 1998 1648 1279 14887 1421 184 189 99 2. 6 1761 879 674 464 02 17 107 1420 128 140. 7 18146 17696 1779 17461 17219 968 709 1 160 1474 1868 1178 2 17. 0 1996 1887 18717 1874 18281 17976 1769 1716 2 1217 141 98. 4 2 194 1968 19191 1882 1844 1804 1740 2 14998 1241 12.1 60 296 2407 2264 2119 22822 2217 224 21714 88 19881 18860 228 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. 2 TWIN CITY FAN - CATALOG 4860

PERFORMANCE DATA Belt Driven, LHBF 6 LHBF (cont.) HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level Performance Max RPM = 19 E8 = 91 Z = 9 Max Motor Frame Size = 184T Outlet Area (ft 2 ) = 7. 2 1 7 878 0.82 24 10 117 9896 967 99 869 8127 711 28 /4 78 0.8 22 1226 1122 940 61 99 9278 847 670 2 687 0.82 1240 1148 118 670 9896 899 790 966 1. 28 128 112 110 898 491 062 992 8811 28 1 812 1. 24 162 12606 127 12 114 89 24 9099 2 76 1. 24 1799 1271 12442 12142 11497 770 994 84 1.6 186 11 12984 12806 1244 199 117 1116 006 28 9 1.6 28 1 14714 14494 1426 1770 120 12727 1198 29 2 86 1.6 28 1788 14868 1462 147 18 1294 1268 146 9424 1217 2. 42 124 14617 1447 14296 197 16 11 12829 11897 8 28 2 2 2. 1 17086 49 14 19 128 107 1498 1887 126 129 2 92 2. 1776 47 8 161 1171 14661 1822 12176 9864 19.29 4 17460 90 76 62 4 061 1782 161 1462 1824 1292 28 1172. 9 197 1898 18772 1860 182 17886 17496 881 184 14784 107 2 90. 6 1989 19178 18992 1880 18417 18019 17606 9 177 1422 126 28 189.47 2 2199 22667 22 2291 229 21819 2118 24 194 19 18447 12 2 1292.47 47 282 22982 22828 22672 226 24 21704 2119 297 1917 18224 1627 2 /4 7 0.8 17.9 117 82 81 9728 9004 8081 E8 2 1 6 1. 21 12914 121 11890 162 11172 6 996 866 2 724 1.6 27 14770 14079 189 170 18 1288 12419 10 97 2 2 797 2. 29 167 147 16 1498 149 14 168 12242 81 2 91. 6 18626 18088 17948 17806 1714 17212 898 402 1480 141 129 688 0.82 18.2 14 1112 868 86 997 91 804 /4 4 76 0.82 14.7 1270 1142 974 72 964 78 1.09 21 1280 1248 1221 11991 11470 904 29 9192 1 4 64 1..8 1982 1274 124 199 1160 4 Z 867 1.64 26 1190 14484 14294 14099 1682 12 1274 11967 7 4 726 1.6 21 011 14942 14671 1496 1814 1172 12462 94 2.19 714 078 19 178 179 1499 1480 1917 12694 1112 2 4 799 2.19 2 17621 62 407 0 166 11 14 19 9.26 8 19149 18600 1847 1812 18012 17700 1771 84 1882 148 189 4 91. 1 180 197 19122 18908 18478 1809 1780 8 189 4 8.49 41 2929 2222 242 22862 2200 2218 21774 21212 194 19077 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. WWW.TCF.COM

PERFORMANCE DATA 42 LHBF L1 Belt Driven, LHBF HP" RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level 1 Performance Max RPM L1 = 411 Max Motor Frame Size = 14T Outlet Area (ft 2 ) = 9.794 27 0. 6.8 714 / 266 0. 7.2 189 670 27 0.6 7.4 1146 692 29 0.4 8. 12298 849 6081 /2 0.0 8.8 1271 928 712 1 0. 9.2 112 9991 8099 --- /4 7 0.68. 14049 1121 124 809 49 0.7.9 140 11894 971 924 61 0.8 11.6 100 1222 19 74 71 0.90 12.4 1467 18 12261 1124 8 1.00 1.2 00 172 122 12187 892 97 1. 1.6 1 1464 166 12901 8 Level 2 Performance Max RPM L2 = 70 Max Motor Frame Size = 184T Outlet Area (ft 2 ) = 9.794 71 0.90 12.4 1467 18 12261 1124 8 1.00 1.2 00 172 122 12187 892 97 1. 1.6 1 1464 166 12901 8 42 1. 1.0 17718 1784 1099 1448 1270 94 1 /2 440 1.0 1.9 184 2 1862 1226 1784 92 44 1.6.8 18927 17219 76 1949 14640 122 L2 468 1.80 17.8 1911 1789 17286 664 148 176 81 --- 2 484 2.00 19.0 178 186 18090 17478 12 1487 129 00 2. 19.9 84 19404 18881 18294 170 191 160 2.70 22 224 209 67 0 18967 17906 627 109 ---.00 24 217 21912 2107 28 1998 18974 17870 14888 72. 2 2846 22672 22294 21860 82 19862 18842 17 6 4.0 29 2647 2448 2147 24809 24007 28 22192 81 660 --- 67.00 2790 26407 26124 2811 2074 241 219 226 1879 679.0 2 287 2762 27096 26808 26128 21 2449 2 66 1629 Level Performance Max RPM B4 = 96 = 96 E8 = 660 Z = 870 Max Motor Frame Size = 21T Outlet Area (ft 2 ) = 9.794 76 1. 26 7 1214 14824 144 169 12711 11821 4 2 1 666 1. 2 17071 1448 14974 1448 148 12429 1127 6 1. 22 17187 1246 14682 14 12888 11 B4 E8 Z 842 1.6 2 1899 17806 1748 17147 49 1699 149 1798 1170 2 76 1.6 29 197 18189 17798 1790 8 1667 14776 1 698 1.6 27 19667 1801 1760 17072 067 1027 176 11269 927 2. 8 87 19842 1960 19266 18649 17998 172 8 1449 12600 2 2 89 2. 4 210 287 19944 1987 1889 1806 1726 07 1727 768 2. 2 29 186 1977 1944 1841 17 89 1480 2 961.1 4 2462 29 29 21 229 21744 268 01 18248 26 180 880. 9 2479 264 2219 22862 22119 2141 4 192 786 670 1. 19. 14662 1447 114 128 122 11499 66 28 1 69 1.09 1.4 187 1497 1989 166 12684 1 24 2 2 1.09 14. 181 1406 1402 19 12460 142 767 1.6 24 78 171 146 10 14679 141 118 12498 28 62 1.6 19.6 18188 926 8 2 1499 1474 1900 1228 2 609 1.6 18.2 1824 17097 70 294 148 1409 196 1126 84 2.19 28 18492 171 17277 1704 78 2 192 14768 186 28 2 717 2. 2 001 18866 1864 182 17608 9 27 1082 122 2 670 2.19 21 79 190 187 189 1764 87 008 144 967.28 212 6 09 1988 1947 19069 1868 18008 811 192 28 821.29 27 22902 2192 266 21404 864 2 197 18818 1714 14771 2 767. 26 229 222 2198 27 214 62 1968 1860 60 2 909.1 27648 267 2649 2622 27 224 24698 2861 228 696 18476 2 1 4 1.09 1.0 142 14278 190 1474 12490 11281 18 2 21 1.6 17.0 17671 70 42 9 17 144 107 1 2 2 7 2. 1944 1874 182 1807 17486 791 024 146 1228 2 66. 26 2220 211 2114 2 661 1 197 1897 89 1469 604 1.07 18.6 101 1940 1666 189 12804 12144 1191 980 1 4 467 1. 17.0 47 14719 1418 101 11844 691 1.61 2 17196 24 00 176 1281 14774 14217 1278 999 4 4 1.6 21 18921 1766 9 46 141 1922 761 2. 26 1898 18077 1788 17640 17 762 1 19 14029 2 4 88 2. 24 84 1949 1906 1867 17791 7 1419 871. 1 27 92 76 4 1978 19400 1880 17702 41 14669 4 67. 29 2846 2269 222 20 212 6 19680 18081 40 848.40 8 27918 2702 268 2688 26144 269 222 24491 22996 280 1861 4 798.49 7 2827 2726 27007 2674 269 2649 204 2400 21966 19196 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. 4 TWIN CITY FAN - CATALOG 4860

PERFORMANCE DATA Belt Driven, LHBF 48 LHBF HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level 1 Performance Max RPM L1 = Max Motor Frame Size = 14T Outlet Area (ft 2 ) = 12.764 26 0.4 7.7 148 811 /2 24 0.0 8.2 181 9487 22 0. 8.4 18 1 L1 270 0.68 9.4 90 1274 027 --- /4 280 0.7.0 1778 16 11487 289 0.8.6 1814 14422 1282 9929 297 0.90 11.1 1864 1081 1761 118 8 1.00 11.8 196 1966 14818 12779 18 1. 12.4 1996 76 1694 1421 Level 2 Performance Max RPM L2 = 64 Max Motor Frame Size = 184T Outlet Area (ft 2 ) = 12.764 297 0.90 11.1 1864 1081 1761 118 8 1.00 11.8 196 1966 14818 12779 18 1. 12.4 1996 76 1694 1421 40 1. 14.1 2144 18479 1702 466 1240 1 /2 2 1.0 1.0 298 19418 184 1700 14 64 1.6 1.9 2281 4 1996 18491 009 112 L2 7 1.80 1.9 242 21180 28 1977 17 1121 --- 2 88 2.00.9 248 22148 21277 406 1899 1090 400 2. 18.0 2111 22 22211 214 1969 867 126 429 2.70 2692 2081 24407 2618 2 48 17096 --- 444.00 22 2787 26121 208 24779 2246 21702 192 18 48. 2 2872 27080 261 2844 2444 22891 294 1867 08 4.0 27 1891 49 29999 2949 2822 26900 296 21 --- 26.00 28 21 1222 79 29627 289 2707 24977 17866 4.0 4088 271 267 197 906 2964 28408 2611 0 Level Performance Max RPM B4 = 2 = 2 E8 = 670 Z = 80 Max Motor Frame Size = 21T Outlet Area (ft 2 ) = 12.764 78 1.64 1 227 2171 2129 840 1988 18797 1771 06 2 662 1.6 28 2978 266 216 976 19766 18488 174 14868 98 1.6 2 2942 227 972 280 1880 17186 14609 812 2.19 6 2667 242 2848 241 22612 21701 74 1929 774 B4 2 2 729 2.21 26404 2469 24229 2746 22714 2196 4 18609 14640 68 2. 2644 2427 2706 29 2184 471 19004 1460 929. 46 296 28128 27802 27469 26779 2600 2271 24024 21874 19697 2 84. 41 7 2874 284 27942 27 266 2248 276 278 1784 170 74.1 7 188 28414 2799 27449 264 2 24140 221 1744 2 989.1 4 822 496 4277 92 284 290 1864 70 28617 2649 24070 89.0 0 7 4279 892 498 268 1829 9 2902 26966 249 7 1 /2 2 8.27 6 4098 9682 92 9017 81 7622 6887 72 662 144 2897 686 1.6 27 121 18641 18271 17900 17129 284 160 1807 28 79 1.6 22 226 741 222 1968 18604 1707 246 1769 2 6 1.6 2276 78 8 19629 188 906 1217 7 2.19 2214 801 464 128 19449 1878 17967 700 28 2 67 2. 27 248 2199 22746 22272 21291 1 1914 176 2 90 2. 2 207 227 22774 2227 21 017 18691 2 864.29 8 242 24170 2874 279 22992 22401 21791 809 18971 840 28 729. 28400 2701 26641 2621 2429 2472 271 22424 19890 27 2 676.29 28709 2719 2671 26 246 249 28 21868 18494 2.49 1 064 29079 2881 2882 2808 2788 2709 2640 2004 219 21880 28 86.0 42 698 248 2247 1940 1297 618 299 28821 27019 207 226 2 801.1 42 4018 272 290 0 1 62 29881 2868 264 281 479 28 990 8.2 0 868 771 714 702 618 98 7 447 2874 1 2967 264 2 7 1 /2 917 8.27 49 8944 7822 74 724 660 604 421 441 2712 767 2890 22874 E8 2 448 1.6 18.7 2182 198 194 18986 180 840 1402 2 2 49 2. 22 2 220 21788 2140 8 19668 1896 97 2 6.29 28 26967 2789 2477 216 24488 2778 2 291 188 2 670.1 9 1978 999 74 484 2990 2997 288 27901 2618 2967 21142 8 1.6 19.8 28 471 026 196 1847 1744 2 4 448 1.64 1.9 2291 649 026 198 17842 Z 9 2.17 2 24291 2289 2208 22 21240 19 1791 2 4 49 2. 18. 221 2174 2268 270 844 191 678.27 29 27772 2670 26249 2918 22 2446 2664 229 19890 4 6.1 2 28897 27127 2667 2621 221 248 201 804.46 8 294 194 7 1407 88 280 29670 28699 2697 2007 226 4 670.49 29 4267 2778 240 26 126 42 2987 28222 4 7 1 /2 767 8.24 6 9228 7929 7602 727 6617 947 2 414 2 299 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. WWW.TCF.COM

PERFORMANCE DATA 4 LHBF HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level 1 Performance Max RPM L1 = 12 Max Motor Frame Size = 14T Outlet Area (ft 2 ) =.126 222 0.68 8.4 19774 12729 --- /4 2 0.7 9.0 487 1440 24 27 0.8 9. 211 186 11909 L1 244 0.90.0 2174 4 191 2 1.00.7 22 17681 121 114 261 1. 11.1 2248 186 797 146 280 1. 12. 24940 786 19419 17 1 /2 290 1.0 1. 281 2189 618 19049 12840 299 1.6 14.1 266 2288 28 296 14891 Level 2 Performance Max RPM L2 = 467 Max Motor Frame Size = 184T Outlet Area (ft 2 ) =.126 280 1. 12. 24940 786 19419 17 1 /2 290 1.0 1. 281 2189 618 19049 12840 299 1.6 14.1 266 2288 28 296 14891 L2 --- 2 --- --- 8 1.80 14. 2744 2877 22676 21429 808 19 2.00 1.4 28414 2086 2900 22740 19070 29 2..1 29 26171 2001 2892 22 1464 2 2.70 18.0 14 28602 277 2646 24294 28 6.00 19.1 212 2996 2894 27894 286 227 17974 77..0 80 1146 241 29218 2727 24976 41 418 4.0 24 722 4472 69 1827 07 2808 22240 4.00 26 869 6600 966 226 482 1779 29988 229 447.0 27 98 797 70 6671 0 42 74 28196 Belt Driven, LHBF Level Performance Max RPM B406 = 98 C = 98 C6 = 79 Z = 66 Max Motor Frame Size = 24T Outlet Area (ft 2 ) =.126 6 1.6 264 2429 2696 2111 21878 97 192 17068 2 02 1.6 28 2778 21 2466 2918 2279 748 18824 4 1.66 26 28221 274 2418 286 2147 1868 612 2. 4 28996 27122 26624 2611 209 2904 2279 2 17279 2 2 2.21 2 2891 27799 27181 2861 24440 2298 296 01 2.21 74 28 27827 27047 212 2281 42 700.29 42 146 1122 690 29799 28864 2788 266 281 627 B406 2 62. 8 4921 7 260 48 974 2982 28602 26680 2282 7.1 6 40 9 2801 2177 826 292 2764 241 8.0 92 797 7624 7271 60 808 042 841 17 2990 2741 2 70.0 0 41440 9894 9489 9077 8228 741 64 4928 2276 2969 2611 679.0 48 42114 404 9872 984 88 72 6062 4094 2997 90 8.2 69 40 486 4 422 426 41987 4144 40 8608 6768 4890 980 2 7 1 /2 88 8.26 64 47408 46067 47 469 4461 49 414 4194 979 7482 068 2877 778 8.28 60 482 467 46 4921 407 44182 4240 4172 8878 424 608 2 944.96 74 20 0947 06 0 49678 49021 4847 471 440 448 412 67 86 11.02 72 9 1717 19 0994 024 49467 486 4766 4002 422 9181 671 1.62 17. 2960 212 4 1979 17842 17 1412 8 1.64 12. 249 2167 706 1981 17771 1079 79 2.17 2688 2994 2272 2227 996 19422 179 164 2 9 2.17 14. 2747 2441 2661 22881 21260 19282 8 C 846.2 2 8 28199 2761 26996 2700 2470 2298 980 17682 678.27 18.1 19 28801 28114 2742 2604 2460 29 064 0.44 81 4170 72 21 226 11 07 2842 2476 22702 199 804.4 2 7227 076 411 97 2774 14 462 2864 2477 921 8.2 29 42644 40786 402 9811 8812 7797 6779 27 2618 2911 2184 2 7 1 /2 867 8.26 4182 998 940 909 84 7140 601 424 896 2696 2 94 11.02 4 46022 44 492 429 42712 418 40919 9400 6608 474 29884 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. 6 TWIN CITY FAN - CATALOG 4860

PERFORMANCE DATA Belt Driven, LHBF 4 LHBF (cont.) HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level Performance Max RPM C = 98 C6 = 79 Z = 66 Max Motor Frame Size = 24T Outlet Area (ft 2 ) =.126 40 1.6 14.7 22460 422 19978 190 181 17048 1890 18 444 1.6 11. 2492 2272 270 9 1946 1786 196 2 411 1.6.2 247 219 21277 86 1907 874 9 2.17 17.0 24748 22844 22444 241 2110 02 1886 17289 171 2 489 2.17 1.8 2749 28 2446 2908 2299 21229 19744 17121 2 42 2.17 12. 27024 2461 24048 24 220 71 18666 C6 681.24 21 282 2691 2621 2880 2177 24412 20 2198 196 00 60.27 17.0 1446 29478 289 2841 27 26 24991 22 2 18.27 1.7 970 28846 28 2782 2678 2684 2401 2211 807.44 29 6 2 170 19 794 2999 2881 26489 24422 2208 664.44 22 7286 60 22 4788 892 2966 17 6 27994 28 2 614.4 67 4871 440 404 197 2 1400 29987 27098 21 760 8.2 28 42677 4127 40892 4022 9764 8982 8181 6947 48 2606 180 2 7 1 /2 70 8.24 26 41 4092 400 9647 8919 8189 749 624 4189 1770 28 86 8.6 4694 469 4 44998 4422 4628 42917 41821 998 8002 972 1426 444 1.61 17.9 2416 2224 21781 21 288 1906 17 4 41 1.64 1. 2646 229 2221 246 489 2. 21 26604 24862 2447 240 212 22191 274 18962 2 4 7 2. 17.9 29071 268 2 249 22141 Z 60.24 2 467 2894 2864 28191 2744 26704 2904 2412 2149 4 429. 2 28 877 249 298 2800 2894 22 664.42 4 612 484 421 4199 6 2940 218 1 2917 27249 24048 4 09.0 29 949 7466 699 644 7 411 26 29784 40 62 8.22 8 42 4664 4274 42879 471 412 408 89 622 2879 28 4 7 1 /2 82 8.27 6 4119 480 42941 42499 4198 4064 96 780 701 4 641 11.04 42 4969 481 47718 47 461 4691 448 4427 4047 6492 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. WWW.TCF.COM 7

PERFORMANCE DATA 60 LHBF HP RPM BHP @ 0" SP 0.000 0.0 0.12 0.10 0.0 0.20 0.0 0.7 0.00 0.62 0.70 1.000 Level 1 Performance Max RPM L1 = 0 Max Motor Frame Size = 14T 186 0.68 7.9 2269 1184 --- /4 19 0.7 8.4 212 1694 199 0.8 8.7 2424 161 0.90 9.0 24974 17046 212 1.00 9. 2827 18824 1419 219 1..1 26679 9 22 L1 L2 1 /2 --- 2 2 1. 11.4 28628 2290 84 70 24 1.0 12.1 2960 240 2222 186 21 1.6 12.9 78 289 2677 86 28 1.80 1. 14 26448 2484 2268 268 2.00 14.2 2649 2794 2648 24711 17906 276 2. 1.0 62 2914 27678 26114 29 Level 2 Performance Max RPM L2 = 99 Max Motor Frame Size = 21T 2 1. 11.4 28628 2290 84 70 1 /2 24 1.0 12.1 2960 240 2222 186 21 1.6 12.9 78 289 2677 86 28 1.80 1. 14 26448 2484 2268 --- 2 268 2.00 14.2 2649 2794 2648 24711 17906 276 2. 1.0 62 2914 27678 26114 29 --- --- 296 2.70.4 6060 212 701 299 27 18912 6.00 17. 7278 84 2197 879 27887 2189. 18.6 8496 0 69 294 2969 24648 0 4.0 22 4268 97 868 7484 146 262 28060 6.00 2 44222 4148 402 9412 7122 4827 29 7.0 24 4684 488 426 41177 8922 678 4198 26881 Belt Driven, LHBF Level Performance Max RPM C = 9 C6 = 80 Z = 68 Max Motor Frame Size = 26T 679 2.17 21 284 218 2464 208 21904 07 18068 1484 2 2.19 17.1 0 2692 2889 24764 22296 19470 2 490 2.18 1. 29648 2098 2709 777.27 26 267 004 29174 2827 26799 2402 2919 2121 1768 612.27 21 4947 180 4 117 28176 26027 2714 C 2 61.27 19.0 944 086 29006 2780 921.4 871 687 97 881 227 114 2940 2988 22861 72.46 28 41400 88 816 749 998 4419 2696 29921 240 2 66.4 24 4026 70 621 2 448 12 6.07 41 4466 4229 46 411 406 9122 7898 626 669 611 27 7 1 /2 8 8.17 4796 4179 44601 4401 42800 41 40187 7994 969 29079 2 761 8.18 4604 4271 427 418 409 868 6880 914.92 41 219 0192 49674 49149 48074 4696 4807 4970 407 681 289 2 88 11.00 0704 48179 47 46921 49 4417 42694 40 47 2.18 21 27481 2004 2469 272 22482 21270 199 17407 2 48 2.18. 074 2714 26404 287 278 2 1981 2 401 2.18 1.0 894 27276 2622 2262 22 944 626.26 26 140 29297 28747 2819 27081 298 24927 2262 1960 122 02.26 22 4469 189 1272 66 2924 27497 2697 249 2 48.27 19. 28 2 162 417 28711 270 208 C6 742.42 7278 469 012 41 619 2680 174 71 28 22 212 9.44 28 408 862 812 7602 64 421 412 1844 2886 2 44.4 26 41911 96 88 8094 6492 000 608 142 26682 849 8. 44 4264 476 40678 40279 9474 8660 7841 6611 46 2648 402 2478 7 1 /2 681 8. 4 46760 44822 441 4888 4297 42 49 9497 68 8 1 2 622 8.1 1 479 4914 461 44764 4449 444 40694 884 6 42 1 82 11.0 1 49026 474 47062 46671 4901 414 4494 428 412 9002 660 221 749 11.04 42 1429 49664 49228 48800 47961 471 46292 44980 42402 9 6604 2 68 11.04 7 2774 0974 0492 49989 48884 47662 468 448 41781 8777 1 9 1.61.8 27789 2242 2417 277 224 4 2 1.64 1.7 6 261 2496 2287 4 2. 19.6 60 28 27702 2704 2648 24184 224 2 4 2..1 702 29964 2886 2762 Z 498.24 24 0 88 266 2 879 29666 28406 266 4 81. 19.8 860 6 4497 60 1447 2884 91.42 1 4178 996 940 98 8212 7268 6278 472 1972 2869 4 42.0 27 4746 48 4298 490 40177 8481 6 40 4 8.2 1982 49960 4947 489 47944 46904 480 492 996 444 4 7 1 /2 17 8.2 224 0009 494 4882 4791 46278 44840 42440 67.98 44 9 787 419 4 2280 148 068 494 470 4446 419 426 40 608.91 40 7048 7 4746 4288 72 2447 1497 49978 46942 496 802 4 69 11.02 8 787 488 496 4421 2198 0 490 417 1. Performance certified is for installation type A: Free inlet, free outlet. 2. Power rating (BHP) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories) in the airstream. 4. The sound ratings shown are loudness values in fan sones at ft. (1.m) in a hemispherical free field calculated per AMCA Standard 1. 8 TWIN CITY FAN - CATALOG 4860

Models LHD/LHB/LHDF/LHBF DIMENSIONAL DATA F D B A G C H TALL BASE OPTION TALL BASE OPTION 2.0 E SQ. (INSIDE) SIZE A B C D LHD/LHB LHDF/LHBF LHD/LHB LHDF/LHBF LHD/LHB LHDF/LHBF LHD/LHB LHDF/LHBF 14 22.7 2.7 0.00 --- 40.00 --- 22.7 2.7 0.00 --- 40.00 --- 18 22.7 2.7 0.00 --- 48.00 --- 21 26.7 27.00 1.7.00 11.00 11.00 4.00 4.00 24 28.7 29.00 17.7 18.00 11.00 11.00 66.00 66.00.7 4.00 19.7.00 14.00 14.00 7.00 78.00 6 9.2 9.0 21.7 22.00 17.0 17.0 88.00 94.00 42 42.2 42.0 2.7 24.00 18.0 18.0 86.00 9.00 48 4.2 4.0 2.7 24.00 19.0 19.0 9.00 112.00 4 46.2 46.0 2.7 24.00 22.0 22.0 112.00 124.00 60 49.7 0.00 26.2 26.0 2.0 2.0 124.00 16.00 SIZE E SQ. F G H LHD/LHB LHDF/LHBF LHD/LHB LHDF/LHBF LHD/LHB LHDF/LHBF LHD/LHB LHDF/LHBF 14 21.0 --- 9.00 --- 40.2 --- 27.0 --- 24.0 --- 9.00 --- 40.2 --- 27.0 --- 18 26.0 --- 1.00 --- 40.2 --- 27.0 --- 21 29.0 29.0 1.00 1.00 44.2 44.0 28.0 28.0 24 2.0 2.0 6.00 6.00 46.2 46.0 28.0 28.0 40.0 40.0 7.00 87.00 1.2 1.0 1.0 1.0 6 46.0 46.0 87.00 87.00 6.7 7.00.00.00 42 2.0 2.0 99.00 99.00 9.7 60.00 6.00 6.00 48 8.0 8.0 111.00 111.00 60.7 61.00 7.00 7.00 4 64.0 64.0 111.00 12.00 6.7 64.00 40.00 40.00 60 70.0 70.0 12.00 1.00 67.2 67.0 41.00 41.00 D4860-1B D4860-B D4860-2B D4860-4B 1. Dimensions are not to be used for construction. WWW.TCF.COM 9

DIMENSIONAL DATA Accessories Roof Curb CURB SIZE ROOF OPENING (DAMPER SIZE + 0.0 INCHES) CURB DAMPER SIZE CANTED SELF-FLASHING CURB SIZE CURB SIZE 14.00 x.00.0 x.0 2.00 x 2.00 2.0 x 2.0 18 2.00 x 2.00 2.0 x 2.0 21 28.00 x 28.00 28.0 x 28.0 24 1.00 x 1.00 1.0 x 1.0 9.00 x 9.00 9.0 x 9.0 6 4.00 x 4.00 4.0 x 4.0 42 1.00 x 1.00 1.0 x 1.0 48 7.00 x 7.00 7.0 x 7.0 4 6.00 x 6.00 6.0 x 6.0 60 69.00 x 69.00 69.0 x 69.0 D4860-1B D4860-2B Note: 1. Curbs have " thick insulation, wood nailer (canted) or /" polystyrene gasket (self-flashing) and damper tray as standard. A 12" high curb is required when using a motorized damper. Backdraft Damper /8" TYP 1 /2" TYP 1 /2" TYP A SQ. B SQ. I.D. /8" TYP " REF " SIZE A SQ. B SQ. C NO. OF PANELS 14.00 1.0 6.00 1 19.00.0 6.00 1 18 21.00 18.0 6.00 1 21 24.00 21.0 6.00 1 24 27.00 24.0 6.00 1.00 2.0 6.00 1 6 41.00 8.0 6.00 1 42 47.00 44.0 7.0 2 48.00 0.0 7.0 2 4 9.00 6.0 7.0 2 60 6.00 62.0 7.0 2 F-DMP-C Notes: 1. Exhaust damper shown (with front flange). 2. Supply damper has rear flange. AIRFLOW C OPEN POSITION C 40 TWIN CITY FAN - CATALOG 4860

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TYPICAL SPECIFICATIONS Models LHD Low Profile Hooded Propeller Roof Ventilators, shall be Model LHD direct drive as manufactured by Twin City Fan & Blower, Minneapolis, Minnesota. PERFORMANCE Fans shall be tested in accordance with AMCA test codes for air moving devices and shall be guaranteed by the manufacturer to deliver rated published performance levels. Fans shall be culus 70 listed for electrical. CONSTRUCTION Fan curb caps shall be constructed of heavy gauge galvanized or finish painted steel for durability and appearance. Curb caps shall have a deep formed inlet venturi for efficient airflow and pre-punched holes for easy mounting to the roof curb. Hood and hood support mechanisms shall be heavy gauge galvanized or finish painted steel. Motor mount assemblies shall be constructed of heavy gauge galvanized or finish painted steel. S Propellers shall be constructed of fabricated steel or cast aluminum blades and hubs. Propellers on direct drive units shall be mounted directly on the motor shaft with a taperlock bushing. MOTORS All motors shall be split phase and capacitor start single phase or three phase induction, permanently lubricated, heavy-duty, ball bearing type, closely matched to the fan load and provided at the voltage, phase, hertz and enclosure as provided on the fan schedule. FINISH AND COATING Fans shall have galvanized steel or finish painted steel curb caps, motor supports, hoods and hood supports. ACCESSORIES When specified, accessories such as backdraft and motorized dampers, curb extensions, roof curb and disconnect switch shall be provided by Twin City Fan to maintain one source responsibility. FACTORY RUN TEST All fans prior to shipment shall be completely assembled and test run as a unit at operating speed or maximum RPM allowed for the particular construction type. Each propeller shall be statically and dynamically balanced in accordance with ANSI/AMCA 4-96 "Balance Quality and Vibration Levels for Fans" to Fan Application Category BV-, Balance Quality Grade G6.. GUARANTEE The manufacturer shall guarantee the workmanship and materials for its LHD direct drive low profile hooded propeller roof ventilators for at least one (1) year from startup or eighteen (18) months from shipment, whichever occurs first. 42 TWIN CITY FAN - CATALOG 4860

TYPICAL SPECIFICATIONS Models LHB Low Profile Hooded Propeller Roof Ventilators, shall be Model LHB belt driven as manufactured by Twin City Fan & Blower, Minneapolis, Minnesota. PERFORMANCE Fans shall be tested in accordance with AMCA test codes for air moving devices and shall be guaranteed by the manufacturer to deliver rated published performance levels. Fans shall be culus 70 listed for electrical. CONSTRUCTION Fan curb caps shall be constructed of heavy gauge galvanized or finish painted steel for durability and appearance. Curb caps shall have a deep formed inlet venturi for efficient airflow and pre-punched holes for easy mounting to the roof curb. Hood and hood support mechanisms shall be heavy gauge galvanized steel. Motor mount assemblies shall be constructed of heavy gauge galvanized or finish painted steel. S Propellers shall be constructed of fabricated steel or cast aluminum blades and hubs. Propellers on belt driven units shall be welded to the fan shaft or secured to the fan shaft with a taperlock bushing. SHAFTS Shafts shall be AISI 4 cold rolled steel, accurately turned, ground, polished, and ring gauged for accuracy. Shafts shall be sized for the first critical speed of at least 1.4 times the maximum speed. BEARINGS Bearings are to be pillow block, heavy-duty, anti-friction, self-aligning, grease lubricated, ball type. Each fan's bearings are sized with a minimum average life, per AFBMA, in excess of 0,000 hours when operating at the maximum RPM of the fan size. DRIVES Motor sheaves shall be cast iron, and supplied as variable pitch standard. Drives and belts shall be rated for a minimum of 10% of the required motor HP. MOTORS All motors shall be single phase or three phase induction, permanently lubricated, heavy-duty, ball bearing type, closely matched to the fan load and provided at the voltage, phase, hertz and enclosure as provided on the fan schedule. FINISH AND COATING Fans shall have galvanized steel or finish painted steel curb caps, motor supports, hoods and hood supports. ACCESSORIES When specified, accessories such as backdraft and motorized dampers, curb extensions, roof curbs and disconnect switches shall be provided by Twin City Fan to maintain one source responsibility. FACTORY RUN TEST All fans prior to shipment shall be completely assembled and test run as a unit at operating speed or maximum RPM allowed for the particular construction type. Each propeller shall be statically and dynamically balanced in accordance with ANSI/AMCA 4-96 "Balance Quality and Vibration Levels for Fans" to Fan Application Category BV-, Balance Quality Grade G6.. Balance readings shall be taken by electronic type equipment in the axial, vertical, and horizontal directions on each of the bearings. Records shall be maintained and a written copy shall be available upon request. GUARANTEE The manufacturer shall guarantee the workmanship and materials for its belt driven LHB low profile hooded propeller roof ventilators for at least one (1) year from startup or eighteen (18) months from shipment, whichever occurs first. WWW.TCF.COM 4

TYPICAL SPECIFICATIONS Models LHDF Low Profile Hooded Propeller Roof Ventilators, shall be Type LHDF direct drive filtered supply as manufactured by Twin City Fan & Blower, Minneapolis, Minnesota. PERFORMANCE Fans shall be tested in accordance with AMCA test codes for air moving devices and shall be guaranteed by the manufacturer to deliver rated published performance levels. Fans shall be culus 70 listed for electrical. CONSTRUCTION Fan curb caps shall be constructed of heavy gauge galvanized or finish painted steel for durability and appearance. Curb caps shall have a deep formed inlet venturi for efficient airflow and pre-punched holes for easy mounting to the roof curb. Hood and hood support mechanisms shall be heavy gauge galvanized or finish painted steel. Motor mount assemblies shall be constructed of heavy gauge galvanized or finish painted steel. S Propellers shall be constructed of fabricated steel or cast aluminum blades and hubs. Propellers on direct drive units shall be mounted directly on the motor shaft with a taperlock bushing. MOTORS All motors shall be split phase and capacitor start single phase or three phase induction, permanently lubricated, heavy-duty, ball bearing type, closely matched to the fan load and provided at the voltage, phase, hertz and enclosure as provided on the fan schedule. FINISH AND COATING Fans shall have galvanized steel or finish painted steel curb caps, motor supports, hoods and hood supports. ACCESSORIES When specified, accessories such as backdraft and motorized dampers, curb extensions, roof curb and disconnect switch shall be provided by Twin City Fan to maintain one source responsibility. FACTORY RUN TEST All fans prior to shipment shall be completely assembled and test run as a unit at operating speed or maximum RPM allowed for the particular construction type. Each propeller shall be statically and dynamically balanced in accordance with ANSI/AMCA 4-96 "Balance Quality and Vibration Levels for Fans" to Fan Application Category BV-, Balance Quality Grade G6.. GUARANTEE The manufacturer shall guarantee the workmanship and materials for its LHDF direct drive low profile hooded propeller roof ventilators for at least one (1) year from startup or eighteen (18) months from shipment, whichever occurs first. 44 TWIN CITY FAN - CATALOG 4860

TYPICAL SPECIFICATIONS Models LHBF Low Profile Hooded Propeller Roof Ventilators, shall be Type LHBF belt driven filtered supply as manufactured by Twin City Fan & Blower, Minneapolis, Minnesota. PERFORMANCE Fans shall be tested in accordance with AMCA test codes for air moving devices and shall be guaranteed by the manufacturer to deliver rated published performance levels. Fans shall be culus 70 listed for electrical. CONSTRUCTION Fan curb caps shall be constructed of heavy gauge galvanized or finish painted steel for durability and appearance. Curb caps shall have a deep formed inlet venturi for efficient airflow and pre-punched holes for easy mounting to the roof curb. Hood and hood support mechanisms shall be heavy gauge galvanized steel. Motor mount assemblies shall be constructed of heavy gauge galvanized or finish painted steel. S Propellers shall be constructed of fabricated steel or cast aluminum blades and hubs. Propellers on belt driven units shall be welded to the fan shaft or secured to the fan shaft with a taperlock bushing. SHAFTS Shafts shall be AISI 4 cold rolled steel, accurately turned, ground, polished, and ring gauged for accuracy. Shafts shall be sized for the first critical speed of at least 1.4 times the maximum speed. BEARINGS Bearings are to be pillow block, heavy-duty, anti-friction, self-aligning, grease lubricated, ball type. Each fan's bearings are sized with a minimum average life, per AFBMA, in excess of 0,000 hours when operating at the maximum RPM of the fan size. DRIVES Motor sheaves shall be cast iron, and supplied as variable pitch standard. Drives and belts shall be rated for a minimum of 10% of the required motor HP. MOTORS All motors shall be single phase or three phase induction, permanently lubricated, heavy-duty, ball bearing type, closely matched to the fan load and provided at the voltage, phase, hertz and enclosure as provided on the fan schedule. FINISH AND COATING Fans shall have galvanized steel or finish painted steel curb caps, motor supports, hoods and hood supports. ACCESSORIES When specified, accessories such as backdraft and motorized dampers, curb extensions, roof curbs and disconnect switches shall be provided by Twin City Fan to maintain one source responsibility. FACTORY RUN TEST All fans prior to shipment shall be completely assembled and test run as a unit at operating speed or maximum RPM allowed for the particular construction type. Each propeller shall be statically and dynamically balanced in accordance with ANSI/AMCA 4-96 "Balance Quality and Vibration Levels for Fans" to Fan Application Category BV-, Balance Quality Grade G6.. Balance readings shall be taken by electronic type equipment in the axial, vertical, and horizontal directions on each of the bearings. Records shall be maintained and a written copy shall be available upon request. GUARANTEE The manufacturer shall guarantee the workmanship and materials for its belt driven LHBF low profile hooded propeller roof ventilators for at least one (1) year from startup or eighteen (18) months from shipment, whichever occurs first. WWW.TCF.COM 4

INDUSTRIAL & COMMERCIAL FANS Centrifugal Fans Utility Sets Plenum & Plug Fans Inline Centrifugal Fans Mixed Flow Fans Tubeaxial & Vaneaxial Fans Propeller Wall Fans Propeller Roof Ventilators Centrifugal Roof & Wall Exhausters Ceiling Ventilators Gravity Ventilators Duct Blowers Radial Bladed Fans Radial Tip Fans High Efficiency Industrial Fans Pressure Blowers Laboratory Exhaust Fans Filtered Supply Fans Mancoolers Fiberglass Fans Custom Fans Twin City Fan Companies, Ltd. A Twin City Fan Company TWIN CITY FAN & BLOWER WWW.TCF.COM 99 Trenton Lane N Minneapolis, MN 442 Phone: 76-1-7600 Fax: 76-1-7601 17 Twin City Fan Companies, Ltd., Minneapolis, MN. All rights reserved. Catalog illustrations cover the general appearance of Twin City Fan & Blower products at the time of publication and we reserve the right to make changes in design and construction at any time without notice.