Price O.R. Systems AIR CURTAIN SYSTEM

Price O.R. Systems AIR CURTAIN SYSTEM The Price Air Curtain System includes non-aspirating laminar flow diffusers directly above the surgical area with a surrounding four-sided linear slot diffuser system engineered specifically for operating room environments. The barrier formed by the perimeter slot diffuser system ensures clean supply air directly above the patient is isolated from older air in the room perimeter. Unmatched air quality and safety for surgical spaces. Surgical zone isolation reduces the risk of hospital acquired infection System easily integrates with Price ceiling grids and ceiling level Unistrut. Heavy-gauge construction is a standard feature on Price HORD series diffusers Microbiological tested in accordance with American College of Surgeons procedures pricecriticalenvironments.com for additional product information, including, product videos and brochures.

Price O.R. Systems Air Curtain Systems Product Overview The Price O.R. Air Curtain System has been specifically designed to meet the stringent ventilation requirements of today s operating rooms. Through the use of controlled air movement, this system provides a work area around the operating table that is as sterile as possible. Not only does the Price Air Curtain System work, it does so with a high degree of comfort and economy. The Price Air Curtain System integrates three basic components to minimize mixing of room and supply air in the operating table area: 1. Air Curtain Diffusers 2. Laminar Flow Diffusers 3. Low-Level Exhaust Grilles Laminar Flow Diffusers (LFD series) Price LFD Series laminar flow diffusers have been engineered to provide a uniform, unidirectional, vertical projection of supply air at a controlled low velocity. The downward piston motion of supply air, combined with low-level exhaust or return air inlets located at the perimeter of the room, is ideal for operating room applications. The laminar flow diffuser utilizes an internal pressure equalization baffle, resulting in a dual chamber design which introduces clean supply air to the space with minimal entrainment of old room air due to a low and controlled discharge velocity. The LFD is available with a number of different features and options, including construction material, welding method and damper access. Units are available in steel, aluminum, stainless steel, or hybrid construction (i.e. steel plenum with aluminum face). Laminar Flow Diffusers w/integral HEPA Filters (LFDC series) The LFDC Series of laminar flow diffusers come with an integral, high efficiency filter. The filter has a gel seal to provide an airtight seal around the filter, ensuring all supply air passes through the filter and provides clean, unidirectional, laminar air flow from the diffuser. The diffuser face is easily removed using quarter-turn fasteners, which allows room-side removal and replacement of the filter without moving or disconnecting the diffuser from the ceiling system. The plenum Laminar Flow Diffuser Laminar Flow Diffusers Welded Grid Ceiling w/ Integral Gasket Return Grille O.R. Work Area Return Grille Lay-in Ceiling Panels Lay-in Light Fixtures Air Curtain Diffusers E-62 All Metric dimensions ( ) are soft conversion. Copyright Price Industries Limited 2011.

Price O.R. Systems Air Curtain Systems Component Features is factory sealed and tested to ensure any leaks are detected at the factory and corrected prior to shipment. Return Grilles The return grilles are located at a low level, preferably centered in each of the four walls. When it is not possible to have four returns, two low-level returns located on opposite sides of the room is the next best alternative. Since the grilles are located at a low level, stainless steel construction is preferred for its ruggedness and resistance to strong cleaning agents typically used in hospital operating rooms. Stainless Steel Return Grille w/ Removable Face (700H series) The Price 700H Series of grilles is available in two models: the 730H with ¾ blade spacing and the 735H with ½ blade spacing. The grilles are stainless steel in construction, giving excellent chemical resistance as well as strength to stand up to the day-to-day abuse in the operating rooms. Each grille is supplied with quarter-turn fasteners that allow for easy removal of the grille, and permit cleaning of the ductwork behind the grille as well as more thorough cleaning of the grille itself. Air Curtain Systems The HORD, in basic terms, is a 2 slot linear diffuser that is located at the perimeter of the operating table work area. The slot diffusers discharge a four-sided air curtain to enclose the work area. The higher velocity air pattern is projected approximately 15 from vertical away from the work area on all four sides. The two continuous slots create a thick, uniform curtain of air around the operating table work area. This air curtain does two things to aid the laminar flow diffusers in maintaining a clean work area: It presents a physical barrier in the form of a clean air curtain between the laminar flow diffusers (LFD) and the old air in the perimeter of the room at the ceiling level where the LFD is most likely to entrain room air. It entrains old room air and heavierthan-air gases to its outer boundary layer and carries them away from the operating table, toward the exhaust grilles, speeding dilution of contaminated room air. The Air Curtain System can be configured using a variety of Price manufactured components to suit individual engineering specifications or a specific application. You can select from the following: PRODUCT DESCRIPTION IMAGE Unitee CR Modular Ceiling Grid HDCR Heavy Duty Welded Ceiling Grid HDCR-IS Welded Ceiling Grid w/integral Unistrut LFD Laminar Flow Diffusers HORD Air Curtain Diffusers 700H Stainless Steel Return Grilles Modular extruded aluminum ceiling grids with integral gasket specifically designed for operating room applications. Heavy duty welded extruded aluminum ceiling grids with continuous gasket specifically designed for operating room applications. Metal framing system for medical equipment support (e.g. Unistrut ) can be integrated with Price system components. Laminar flow diffusers engineered to provide a uniform vertical projection of supply air at controlled low velocity. Linear slot diffusers form perimeter curtain around the operating table. Designed for all critical environment applications requiring robust construction and access for cleaning (face is easily removed for cleaning). Copyright Price Industries Limited 2011. All Metric dimensions ( ) are soft conversion. E-63

Price O.R. Systems Components Air Curtain Systems - Diffusers Product Information HORD Series HORD series diffusers are fabricated using 14 gauge aluminum or 20 gauge stainless steel to suit project requirements. All corners (both vertical and horizontal) feature a 3/4 radius to facilitate effective cleaning while plenum end caps are continuously welded to optimize plenum integrity. The diffuser face is attached using springloaded quarter-turn fasteners for easy removal and access to internal surfaces for cleaning. Factory installed stainless steel dampers allow for simple adjustment and system balancing. Aluminum units feature a white bakedon powder coat finish (B12) formulated to resist scratches and flaking. All Price paint finishes used on critical environment products have been tested in accordance with ASTM procedures to ensure durability and resistance to common hospital cleaning solutions. Standard Construction / Features 14 Gauge aluminum construction w/b12 white powder coat finish 20 Gauge stainless steel construction w/#4 brushed finish on all exposed surfaces Customized removable equalization baffles to suit diffuser length and inlet location Removable face Spring-loaded quarter-turn fasteners Safety cables Continuously welded end caps 3/4 Radius plenum corners Removable stainless steel opposed blade damper (standard option) Factory mounted hanger brackets Optional Construction / Features 18 Gauge aluminum plenums 23 Gauge stainless steel plenums Hybrid construction (SS face/al plenum) Flat, mechanically fastened end caps HORD Diffuser Profile Plenum Width = 5.88 2.50 Hanger Brackets Factory Installed Removeable Safety Tether Factory Installed Mounting and Fastening (by others) SURFACE MOUNT OPTION Radius Plenum Corners Stainless Steel Damper c/w Remote Lever Operator Set Screw for Locking Damper Blades Overall Frame = 9.75 Ceiling Opening = 6.50 Nom. Inlet Height = 6.00 Seal Plenum and MTG. Frame Joint with Sealant after Assy. (by others) 1.50 Plenum Height = 12.00 TEE BAR LAY IN OPTION Overall Tee Bar Center to Center Spacing = 10.00 Equilization Baffle Quick Release Fastener Damper Adjustment Hole E-64 All Metric dimensions ( ) are soft conversion. Copyright Price Industries Limited 2011.

Price O.R. Systems Components Air Curtain Systems - Diffusers Modular Plenum System The modular HORD system is supplied as four separate modules. Each module includes a plenum, face assembly and at least one inlet. In order to ensure equal velocity distribution over the face of the HORD section, there should be at least one inlet per 8 ft of HORD section. HORD sections larger than 8 ft should have a minimum of two inlets. HORD plenums are supplied in maximum one-piece section lengths of up to 8 ft. HORD plenums larger than 8 ft are supplied in multiple sections with a flanged connection provided for field assembly. Modular System Factory Riveted to he Plenum Sections pply Sealant Round Connection Flanges (by others) Flat, Mechanically Fastened Formed, Continuously Welded Continuous Plenum System The requirement to have at least one inlet for every plenum may be a limitation for many operating room applications due to space constraints in the ceiling plenum. This may be particularly true for retrofit applications where an existing hospital area is being converted into an operating room. For these situations Price offers the continuous plenum option in lieu of four independent modular plenums. Four sections of plenum are provided with corner sections, creating a continuous supply plenum. Corner sections allow supply air to freely pass from one plenum section to another, creating a self-balancing plenum system. The continuous plenum systems require only two, compared with at least one inlet on each side of the modular system (minimum four total). Continuous System Field Fastened by others to Plenum Using 1/4" Hardware Provided Apply Sealant Round Connection Flanges (by others) 90 Degree Corner, Mechanically Fastened Copyright Price Industries Limited 2011. All Metric dimensions ( ) are soft conversion. E-65

Price O.R. Systems Components Air Curtain Systems - Diffusers Selecting HORD Air Curtain Systems - Dimensional Information An air curtain system is designed to protect the critical area of an operating room, where the patient and surgical team are concentrated. This critical area is, therefore, used to define the dimensional properties of the system. The nominal inside dimensions, or module length and width, of the air curtain system should be specified when selecting the HORD or HORDSS. (Nominal Inside Dimensions = Overall Inside Dimensions - 0.25 in.). Modular Plenum System 25 Overall Width = Overall Diffuser = Module Width + 19.75 Variable Inlet Sizes, Spacing and Quantities DETAIL B SIDE C Overall Diffuser = Module Length - 0.25 Inlet Spacing Inlet Spacing SIDE A SIDE B Module Length (L) Overall Length = Module Length + 19.75 SIDE D Inlet Spacing Inlet Spacing Module Width (W) E-66 All Metric dimensions ( ) are soft conversion. Copyright Price Industries Limited 2011.

Price O.R. Systems Components Air Curtain Systems - Diffusers Selecting HORD Air Curtain Systems - Dimensional Information Continuous Plenum System Overall Width = Module Width + 19.75 Overall Diffuser = Module Width - 0.25 Variable Inlet Sizes, Spacing And Quantities SIDE C Overall Diffuser = Module Length - 0.25 Inlet Spacing SIDE A SIDE B Module Length (L) Overall Length = Module Length + 19.75 SIDE D Inlet Spacing Module Width (W) Copyright Price Industries Limited 2011. All Metric dimensions ( ) are soft conversion. E-67

Price O.R. Systems Components Air Curtain Systems - Diffusers Performance Data Nominal Length 6 7 8 9 10 11 12 14 Performance Notes: 1. Tested in accordance with ASHRAE Standard 70-2006 Method of Testing for Rating the Performance of Air Outlets and Inlets. 2. Air flow is in cubic feet per minute per foot, /ft. 3. All pressures are in inches of water, in. w.g. 4. Throw values are given in feet to terminal velocities of 150-100-50 fpm based on 10 F cooling. 5. Blanks indicate an level below 15. / ft 25 30 35 40 45 17 21 THROW 0-1-4 1-1-5 1-2-6 1-2-6 1-3-7 S.P. 0.031 0.045 0.045 0.059 0.074 19 24 THROW 0-1-4 1-2-6 1-2-6 1-3-7 2-4-7 S.P. 0.048 0.070 0.054 0.070 0.088 16 21 25 THROW 1-1-5 1-2-6 1-2-7 1-3-7 2-4-8 S.P. 0.051 0.074 0.061 0.080 0.101 18 23 27 THROW 1-1-5 1-2-7 1-3-7 2-3-8 2-4-8 S.P. 0.054 0.078 0.056 0.073 0.093 18 23 28 THROW 1-1-6 1-2-7 1-3-7 2-4-8 2-5-8 S.P. 0.049 0.071 0.065 0.084 0.107 20 25 29 THROW 1-2-6 1-2-7 1-3-8 2-4-8 2-5-9 S.P. 0.052 0.075 0.071 0.092 0.117 15 21 26 31 THROW 1-2-7 1-2-8 1-3-8 2-4-9 2-5-9 S.P. 0.066 0.095 0.066 0.086 0.109 18 23 28 33 THROW 1-2-7 1-3-8 2-4-9 2-5-10 3-6-10 S.P. 0.069 0.099 0.076 0.099 0.126 E-68 All Metric dimensions ( ) are soft conversion. Copyright Price Industries Limited 2011.

Price O.R. Systems Components Air Curtain Systems - Diffusers Selection Guidelines Exhaust An operating room should maintain a positive pressure differential with adjacent spaces at all times. For this reason, the operating room exhaust air volume should be less than the total supply air volume. The required air flow offset (between supply and exhaust) to achieve a desired differential pressure relative to adjacent spaces is dependent on how well the room envelope is sealed. As such, it is not possible to calculate the offset value in advance of room commissioning and system balancing. However, a typical OR would have approximately 20% more air supplied to the room than is exhausted. The exhaust grilles should be located symmetrically on the walls near the floor level. The recommended unit for this application is a grille with 45 deflection blades, either 0.50 in. (13) or 0.75 in. (19) on center, constructed of stainless steel for strength and ease of cleaning. The unit should have quick-release fasteners for easy removal and cleaning. See pages E80 - E83 for a complete description of Price stainless steel return grilles (Model 700H) and their performance data. Selection at a core velocity of approximately 500 fpm will result in reasonable sound level and pressure drop. Stainless steel construction is recommended for the low-level exhaust for durability and ease of cleaning (Model 700H/700FF). Copyright Price Industries Limited 2011. All Metric dimensions ( ) are soft conversion. E-69

Price O.R. Systems Components Air Curtain Systems - Diffusers Ceiling System Details Detail A (Diffuser) Detail B (Panel) Ceiling Panel Detail C (Perimeter) Detail D (Perimeter) Drywall Perimeter Drywall Detail Ceiling panels, supplied by Price or others, are secured using hold-down clips to ensure an effective seal is maintained against the gasket (Detail A). LFD units or lighting designed for lay-in applications will typically create an effective seal without the need for holddown clips (Detail B). Special perimeter extrusions are available with Unitee CR to provide seal at the wall. Plaster perimeter ceiling is recommended for HDCR (Detail C and D). Ceiling Panels SC (Solid Core) panels provide a clean, flat surface with no exposed seams. Formed edges give the panels structural integrity. SC (Solid Core) SCE SCF (Solid Core Flush) panels provide a clean, flat surface that sits flush with the ceiling tee. SCE (Solid Core Extruded frame) panels feature an extruded frame for added structural integrity and and architectural look. PCE (Perforated Core Extruded frame) panels are similar to the SCE design but with a perforated look typically selected to match nearby laminar flow diffusers. A solid panel sits directly behind the perforated face to ensure there is no transfer of air between the room and ceiling plenum. SCF PCE E-70 All Metric dimensions ( ) are soft conversion. Copyright Price Industries Limited 2011.

Price O.R. Systems Components Air Curtain Systems - Diffusers Microbiological Testing In order to quantify the effectiveness of the Price Air Curtain System in delivering clean air to the operating room work site, we have conducted several field tests with actual installed systems. While test procedures exist for rating the cleanliness level of cleanrooms, they do not necessarily apply to operating rooms. The cleanroom test procedure measures the quantity of all particles of a specific size range. However, in an O.R. we are primarily concerned with colony forming units or bacterial counts due to the risk of post-operative infections, not simply particles. To address this issue, the American College of Surgeons Committee on Operating Room Environment published a definition of Surgical Microbiological Clean Air, which defined three classes of air cleanliness as follows: Class I Containing a maximum of one bacterial particle per cubic foot of air. Class V Containing a maximum of five bacterial particles per cubic foot of air. Class XX Containing a maximum of 20 bacterial particles per cubic foot of air. Price has had multiple Air Curtain System installations tested for microbiological air cleanliness per the College of Surgeons methodology. All tests were performed by independent agencies and in each case results confirmed that the Price systems provided an area around the operating table which met the American College of Surgeons requirement for a Class I environment. Test reports can be provided by contacting your local Price representative. Copyright Price Industries Limited 2011. All Metric dimensions ( ) are soft conversion. E-71

Price OR System Components LFD Series Product Overview Price LFD Series Laminar Flow Diffusers have been engineered to provide a uniform vertical projection of supply air at controlled low velocity. The downward projection or piston motion of supply air, combined with low-level exhaust or return air inlets is ideal for cleanroom or operating room applications. The laminar flow diffuser introduces clean supply air to the space with minimal entrainment of room air due to its low initial face velocity. Application Laminar flow diffusers located in the ceiling immediately above the work area can provide a controlled flow of conditioned supply air with minimal entrainment of residual room air. Coupled with low-level exhaust inlets, a controlled, low velocity mass movement of air can be maintained. The boundary layer of the air mass is the only place where any appreciable entrainment of residual room air may occur. With the boundary layer remote from the work area, the low velocity controlled air mass effectively isolates the work area from any effects or contaminants of the residual room air. Features and Options Price offers a variety of features and options to satisfy different application and construction requirements. All units utilize a dual chamber design to ensure equalized air flow and consistent face velocity. Full steel, aluminum, stainless steel or hybrid (i.e. SS face, AL plenum) construction available. Continuously welded corners on SS or AL units. Easy access to internal plenum surfaces for cleaning. Full-flow, butterfly style dampers. Face-operable dampers (removable plug in the diffuser face). Spring-loaded, quick-release fasteners for easy removal of face. Safety cables. Structural hanger tabs. Universal mounting frame to allow for a surface mount or T-bar installation. E-72 LFD 1 5 16 Perforated Equalization Baffle Dimensional Data - Imperial (in.) / Metric (mm) Nominal Size Inlet Size Length x Width Imperial (in.) Metric (mm) 6, 7, 8 24 x 12 (610 x 305) 600 x 300 6, 7, 8 36 x 12 (914 x 305) 900 x 300 6, 7, 8 48 x 12 (1219 x 305) 1200 x 300 6, 7, 8 60 x 12 (1524 x 305) 1500 x 300 6, 7, 8, 10, 12 24 x 24 (610 x 610) 600 x 600 6, 7, 8, 10, 12 36 x 24 (914 x 610) 900 x 600 6, 7, 8, 10, 12 48 x 24 (1219 x 610) 1200 x 600 6, 7, 8, 10, 12 60 x 24 (1524 x 610) 1500 x 600 All Metric dimensions ( ) are soft conversion. Copyright Price Industries Limited 2011.

Price OR System Components LFD Series Performance Data 12 X 48 Panel 8 Round Inlet sp tp 80 0.01 0.02 120 0.03 0.03 160 0.05 0.06 200 0.07 0.09 240 0.11 0.14 24 X 24 Panel 8 Round Inlet 24 X 24 Panel 10 Round Inlet sp tp sp tp 80 0.01 0.02 80 0.01 120 0.03 0.03 120 0.02 0.02 160 0.05 0.06 160 0.04 0.04 200 0.07 0.09 200 0.06 0.07 240 0.11 0.14 240 0.08 0.09 24 X 36 Panel 8 Round Inlet 24 X 36 Panel 10 Round Inlet sp tp sp tp 120 0.01 0.02 120 0.01 0.01 180 0.03 0.04 180 0.02 0.03 240 0.05 0.08 240 0.04 0.05 300 0.07 0.12 19 300 0.06 0.08 360 0.11 0.17 25 360 0.09 0.12 16 24 X 48 Panel 8 Round Inlet 24 X 48 Panel 10 Round Inlet 24 X 48 Panel 12 Round Inlet sp tp sp tp sp tp 160 0.02 160 0.01 0.02 160 0.01 240 0.02 0.05 240 0.02 0.04 240 0.02 0.03 320 0.04 0.09 20 320 0.04 0.06 320 0.04 0.05 400 0.06 0.14 27 400 0.07 0.10 17 400 0.06 0.07 480 0.09 0.21 33 480 0.09 0.14 23 480 0.08 0.11 16 24 X 60 Panel 8 Round Inlet Performance Notes: 1. sp = Static Pressure, in. w.g. 2. tp = Total Pressure, in. w.g. 3. = Air flow in cubic feet per minute,. 4. = Noise Criteria. values are based on room absorption of 10dB re 10-12 watts. 5. Blanks[] indicate level below 15 and a sp less than 0.01. 6. sp and with no damper. 7. Tested in accordance with ASHRAE Standard 70-2006. 24 X 60 Panel 10 Round Inlet 24 X 60 Panel 12 Round Inlet sp tp sp tp sp tp 200 0.03 200 0.02 200 0.01 300 0.01 0.06 19 300 0.02 0.04 300 0.02 0.03 400 0.02 0.10 28 400 0.04 0.07 16 400 0.04 0.05 500 0.04 0.16 35 500 0.06 0.11 23 500 0.06 0.08 15 600 0.05 0.23 41 600 0.09 0.16 29 600 0.09 0.12 21 Copyright Price Industries Limited 2011. All Metric dimensions ( ) are soft conversion. E-73

Price OR System Components LFD3 Series Product Overview The PRICE LFD3 Laminar Flow Diffuser was designed with performance and safety in mind. This dual-chamber diffuser utilizes a carefully engineered dispersion basket along with an integrated V baffle to evenly distribute clean supply air across the face of the diffuser, regardless of diffuser size. The room-side adjustable cone damper promotes distribution of supply air within the upper plenum chamber while also offering maximum convenience for balancing contractors to adjust flow rates without removing the diffuser face. To ensure ASHRAE 170 requirements were satisfied for diffuser cleaning access, the LFD3 design facilitates quick and easy removal of all internal components without the need for tools. In addition, the design is completely free of any sheet-metal screws or other sharp fasteners that could lead to injury during the cleaning process. The low profile one-piece plenum features fully welded corners to protect against infiltration of air from the ceiling plenum as well as loss of expensive air through seams in the diffuser casing. LFD3 - Exploded View Removable Dispersion Basket Removable Perforated V-Baffle Removable Damper Adjustment Plug Adjustable Cone Damper with Face Accesible Set Screw Removable Perforated Equalization Baffle Standard Features Dual-chamber design Tool-free removable dispersion basket, V baffle and equalization baffle Cone damper One-piece welded plenum (4.75 height) Perforated faceplate, standard capacity nominally 20-40fpm. Aluminum construction Baked powder coat finish (B12 white) Suitable for surface mount or lay-in applications Product Options ½ foil-backed external insulation Plug for room side access of damper adjustment screw Aluminum plaster frames Stainless steel construction (#4 brushed finish on all exposed surfaces) Applications The LFD3 s non-aspirating, unidirectional laminar flow is ideal for applications where a low velocity and minimal entrainment of room air is required. Examples of such spaces may include cleanrooms, laboratories and hospital operating rooms. Tampa General Hospital E-74 All Metric dimensions ( ) are soft conversion. Copyright Price Industries Limited 2011.

Price OR System Components LFD3 Series Product Information 2 (51) SURFACE MOUNT Actual Opening = Nom. Size - 1 1 /4 (32) Nom. Duct 1 /8 (3) T-BAR MOUNT Ceiling Module = Nominal Size Optional Insulation Max 1 /2 (13) Perforated V Baffle (removable) Hanger Brackets Removable Baffle 4 3 /4 (121) Perforated Equalization Baffle (removable) T-Bar (by others) Optional Damper Face Access Plug Overall = Nominal Size - 1 /4 (6) Cone Damper SURFACE MOUNT DETAIL: (Uninsulated Plenums Only) Steel Channel, Blocking & Fastener (by others) SURFACE MOUNT DETAIL: (Insulated Plenums) APF/APFG Plaster Frame (required for surface mount installation) 5 /16 (8) Ceiling Opening = Nom. + 7 /16 (11) = T-BAR MOUNT DETAIL: Quick Release ( 1 /4 turn ) Fasteners For 15 /16 (24) or 1 (25) Tee Dimensional Data - Imperial (in.) / Metric (mm) Inlet Size Imperial (in.) Nominal Size Length x Width Metric (mm) 6, 7, 8 24 x 12 (610 x 305) 600 x 300 6, 7, 8 36 x 12 (914 x 305) 900 x 300 6, 7, 8 48 x 12 (1219 x 305) 1200 x 300 6, 7, 8 60 x 12 (1524 x 305) 1500 x 300 6, 7, 8, 10, 12 24 x 24 (610 x 610) 600 x 600 6, 7, 8, 10, 12 36 x 24 (914 x 610) 900 x 600 6, 7, 8, 10, 12 48 x 24 (1219 x 610) 1200 x 600 6, 7, 8, 10, 12 60 x 24 (1524 x 610) 1500 x 600 Performance Data: Unit Size /ft 2 20 25 30 35 40 Total Pressure, in. w.g. 0.040 0.062 0.090 0.122 0.160 24x24 Static Pressure, in w.g. 0.037 0.057 0.082 0.112 0.146 8 Round Inlet Flow Rate, 80 100 120 140 160 20 25 30 34 24x48 8 Round Inlet Total Pressure, in. w.g. 0.113 0.177 0.255 0.347 0.453 Static Pressure, in w.g. 0.100 0.156 0.225 0.307 0.400 Flow Rate, 160 200 240 280 320 21 27 32 36 39 Performance Notes: 1. = Cubic Feet per minute, 2. = Noise Criteria. values are based on room absorption of 10dB re 10-12 watts. 3. Blanks[] indicate level below 15 4. SP and are with damper in wide open position. 5. Tested in accordance with ASHRAE Standard 70-2006. Copyright Price Industries Limited 2011. All Metric dimensions ( ) are soft conversion. E-75

Stainless Steel Louvered Face Return 700H Series Product Information Models 45 Deflection, 3 /4 (19) Spacing Grille 730H Register (c/w s.s. Damper) 730HDSS 45 Deflection, 1 /2 (13) Spacing Grille 735H Register (c/w s.s. Damper) 735HDSS Application Well suited to cleanrooms, laboratories and hospital applications requiring frequent cleaning with strong cleaning solutions. Intended to be incorporated into a conveniently serviceable primary return air system. Designed with easily removable grille for access and cleaning. Construction Complements the Price 700 Series supply and return grilles and registers. Precision formed stainless steel blades, borders and mounting frame. 45 deflection fixed blades. Borders and frames are of all-welded construction with reinforced mitered corners. Grille is attached to the mounting frame with stainless steel quick-release fasteners. Mounting/Finish Border Style Surface Mount F Blade Orientation Front blades parallel to L Long Dimension Front blades parallel to S Short Dimension Finish Border #4 Blades 2B Available Sizes Minimum 6 x 4 (152 x 102) Maximum 24 x 24 (610 x 610) Grille sizes increase in 1 (25) increments. 45 3/4 in. (19) Blade Spacing - 730H/730HDSS 45 1 /2 in. (13) Blade Spacing - 735H/735HDSS 1 1 /2 (32) 1 7 /8 (48) E-76 Product Selection Checklist 1] Select Outlet Type by model number (i.e. 730H, 730HDSS, etc.) 2] Select Unit Size based on desired performance requirements 3] Select Border Style F (Sidewall Application - Surface Mount) 4] Select Blade Orientation (Long or Short Dimension) 5] Finish selection by default Example: 735H/24 x 24/F/L/#4 730HDSS/18 x 6/F/S/#4 All Metric dimensions ( ) are soft conversion. Copyright Price Industries Limited 2011.

Stainless Steel Louvered Face Filter Return 700FF Series Product Information Models 45 Deflection, 3 /4 (19) Blade Spacing 730FF 45 Deflection, 1 /2 (13) Blade Spacing 735FF Application Well suited to cleanrooms, laboratories and hospital applications requiring frequent cleaning with strong cleaning solutions. Intended to be incorporated into a conveniently serviceable primary return air system. Designed with easily removable grille for access and cleaning. Filter frame allows mounting of return air filter behind face of grille for easy replacement. Construction Complements the Price 700 Series supply and return grilles and registers. Precision formed stainless steel blades, borders and mounting frame. 45 deflection fixed blades. Borders and frames are of all-welded construction with reinforced mitered corners. Grille is attached to the filter frame with stainless steel quick-release fasteners to facilitate easy removal and replacement of filters. Mounting/Finish Border Style Sidewall Application - Surface Mount SM T-bar Lay-in TB Blade Orientation Front blades parallel to L Long Dimension Front blades parallel to S Short Dimension Filter Frame Depth 1 Filter 1 2 Filter 2 Finish Border #4 Blades 2B Available Sizes 730FF 2 1 /2 (64) 1 1 /4 (32) Opening Must Be Notched at Fastener Locations 1 Filter Option Nominal Duct Size Outside Stack = Duct - 1 /8 (3) Filter Size = Duct - 1 /4 (6) 2 Filter Option Grille Face Opening = D- 3 /4 (19) Duct Size + 1 3 /4 (44) Surface Mount Frame Shown 3 1 /2 (89) 5 /16 (8) 1 1 /4 (32) Minimum Maximum 6 x 4 (152 x 102) 24 x 24 (610 x 610) Grille sizes increase in 1 (25) increments. Product Selection Checklist 1] Select Outlet Type by model number (i.e. 730FF) 2] Select Unit Size based on desired performance requirements 3] Select Border Style (Sidewall Application - Surface Mount or T-bar Lay-in) 4] Select Blade Orientation (Long or Short Dimension) 5] Select Filter Depth (1 or 2 ) 6] Finish selection by default Example: 730FF/24 x 12/F/L/2/#4 Copyright Price Industries Limited 2011. All Metric dimensions ( ) are soft conversion. E-77

Stainless Steel Louvered Face Filter Return 700H/700FF Series Performance Data Models 730H, 730FF 3/4" blade spacing 30 Core Core Velocity 200 300 400 500 600 700 800 900 1000 1100 Area Nominal Size Velocity Pressure.002.006.010.016.022.031.040.050.062.075 Sq. Ft. Negative SP.011.025.044.069.100.136.177.224.277.335 0.15 7 x 4 CFM 30 45 60 75 90 105 120 135 150 165 6 x 5 - - - 19 24 28 32 35 38 40 40 0.18 8 x 4 6 x 6 CFM 36 54 72 90 108 126 144 162 180 198 7 x 5 - - - 19 24 28 32 35 38 41 0.22 10 x 4 7 x 6 CFM 44 66 88 110 132 154 176 198 220 242 8 x 5 - - - 20 25 29 33 36 39 41 0.26 12 x 4 8 x 6 CFM 52 78 104 130 156 182 208 234 260 286 10 x 5 - - - 20 25 29 33 36 39 42 0.30 14 x 4 CFM 60 90 120 150 180 210 240 270 300 330 - - 15 21 26 30 33 37 40 42 0.34 16 x 4 10 x 6 CFM 68 102 136 170 204 238 272 306 340 374 12 x 5 - - 15 21 26 30 34 37 40 43 0.39 18 x 4 12 x 6 CFM 78 117 156 195 234 273 312 351 390 429 14 x 5 8 x 8 - - 15 21 26 31 34 37 40 43 0.46 20 x 4 14 x 6 CFM 92 138 184 230 276 322 368 414 460 506 16 x 5 10 x 8 - - 16 22 27 31 35 38 41 43 0.52 24 x 4 16 x 6 CFM 104 156 208 260 312 364 416 468 520 572 18 x 5 - - 16 22 27 31 35 38 41 44 0.60 18 x 6 10 x 10 CFM 120 180 240 300 360 420 480 540 600 660 20 x 5 12 x 8 - - 16 23 28 32 35 39 42 44 0.69 20 x 6 12 x 10 CFM 138 207 276 345 414 483 552 621 690 759 24 x 5 14 x 8 - - 17 23 28 32 36 39 42 45 0.81 22 x 6 14 x 10 CFM 162 243 324 405 486 567 648 729 810 891 16 x 8 - - 17 23 28 33 36 40 42 45 0.91 16 x 10 CFM 182 273 364 455 546 637 728 819 910 1001 18 x 8 12 x 12 - - 18 24 29 33 37 40 43 45 1.07 18 x 10 CFM 214 321 428 535 642 749 856 963 1070 1177 22 x 8 14 x 12 - - 18 24 29 33 37 40 43 46 1.18 20 x 10 14 x 14 CFM 236 354 472 590 708 826 944 1062 1180 1298 24 x 8 16 x 12 - - 18 25 29 34 37 41 43 46 1.34 22 x 10 16 x 14 CFM 268 402 536 670 804 938 1072 1206 1340 1474 28 x 8 18 x 12 - - 19 25 30 34 38 41 44 46 1.60 18 x 14 CFM 320 480 640 800 960 1120 1280 1440 1600 1760 22 x 12 16 x 16 - - 19 25 30 35 38 41 44 47 1.80 20 x 14 CFM 360 540 720 900 1080 1260 1440 1620 1800 1980 24 x 12 18 x 16 - - 20 26 31 35 39 42 45 47 2.08 24 x 14 CFM 416 624 832 1040 1248 1456 1664 1872 2080 2288 20 x 16 - - 20 26 31 35 39 42 45 48 2.45 24 x 16 CFM 490 735 980 1225 1470 1715 1960 2205 2450 2695 20 x 18 - - 20 27 32 36 39 43 46 48 2.78 24 x 18 CFM 556 834 1112 1390 1668 1946 2224 2502 2780 3058 - - 21 27 32 36 40 43 46 48 3.11 24 x 20 CFM 622 933 1244 1555 1866 2177 2488 2799 3110 3421 - - 21 27 32 36 40 43 46 49 20 30 40 Performance Notes: 1. Negative sp = Negative static pressure in in. w.g. 2. Performance data is for grille complete with opposed blade damper in the full open position. 3. = Noise Criteria (sound pressure level). Based on 10 db room absorption re 10-12 watts. 4. Blanks [] indicate an level below 15. 5. Tested in accordance with ASHRAE Standard 70-2006 Method of Testing for Rating the Performance of Air Inlets and Outlets. E-78 All Metric dimensions ( ) are soft conversion. Copyright Price Industries Limited 2011.

Stainless Steel Louvered Face Return 700H/700FF Series Performance Data Models 735H, 735FF 1 /2" blade spacing 20 30 40 Core Core Velocity 200 300 400 500 600 700 800 900 1000 1100 Area Nominal Size Velocity Pressure.002.006.010.016.022.031.040.050.062.075 ft 2 Negative sp.015.035.062.097.139.190.248.314.387.468 0.15 7 x 4 30 45 60 75 90 105 120 135 150 165 6 x 5 19 24 28 32 36 39 41 0.18 0.22 0.26 0.30 0.34 0.39 0.46 0.52 0.60 0.69 0.81 0.91 1.07 1.18 1.34 1.60 1.80 2.08 2.45 2.78 3.11 8 x 4 10 x 4 12 x 4 14 x 4 16 x 4 18 x 4 20 x 4 24 x 4 18 x 6 20 x 6 22 x 6 16 x 10 18 x 10 20 X 10 22 x 10 18 X 12 20 x 14 24 x 14 24 x 16 24 x 18 24 x 20 6 x 6 7 x 6 8 x 6 10 x 6 12 x 6 14 x 6 16 x 6 10 x 10 12 x 10 14 x 10 14 X 14 16 x 14 60 416 490 556 622 36 44 52 90 68 78 92 104 120 138 162 182 214 236 268 360 624 735 834 933 54 66 78 120 102 117 138 156 180 207 243 273 321 354 402 540 832 980 1112 1244 72 88 104 150 136 156 184 208 240 276 324 364 428 472 536 21 720 1040 1225 1390 1555 90 110 130 180 170 195 230 260 300 345 405 455 535 590 670 27 900 1248 1470 1668 1866 108 132 156 210 204 234 276 312 360 414 486 546 642 708 804 33 1080 1456 1715 1946 2177 126 154 182 240 238 273 322 364 420 483 567 637 749 826 938 37 1260 1664 1960 2224 2488 144 176 208 270 272 312 368 416 480 552 648 728 856 944 1072 41 1440 1872 2205 2502 2799 162 198 234 300 306 351 414 468 540 621 729 819 963 1062 1206 44 1620 2080 2450 2780 3110 180 220 260 330 340 390 460 520 600 690 810 910 1070 1180 1340 47 50 1800 2288 2695 3058 3421 198 242 286 374 429 506 572 660 759 891 1001 1177 1298 1474 50 1980 7 x 5 8 x 5 10 x 5 12 x 5 14 x 5 16 x 5 18 x 5 20 x 5 24 x 5 16 x 8 18 x 8 22 x 8 24 X 8 18 x 14 24 x 12 20 x 16 20 x 18 8 x 5 8 x 8 10 x 8 12 x 8 14 x 8 12 x 12 14 x 12 16 X 12 18 x 16 320 15 15 16 15 480 23 23 24 24 21 16 16 17 17 18 18 19 19 20 20 640 22 29 30 30 31 19 20 21 27 22 22 23 24 24 25 25 26 26 27 800 28 34 35 35 36 25 25 26 31 27 28 28 29 29 30 31 31 32 32 960 34 39 39 40 40 29 30 31 35 32 32 33 33 34 34 35 35 36 36 1120 38 42 43 44 44 33 34 34 38 35 36 37 37 38 38 39 39 40 40 1280 42 46 46 47 47 36 37 38 41 39 39 40 40 41 42 42 43 43 44 1440 45 49 50 50 50 39 40 41 44 42 42 43 43 44 45 45 46 46 47 1600 48 52 52 53 53 42 43 43 45 45 46 46 47 47 48 48 49 49 1760 51 22 x 12 16 x 16 22 28 33 38 41 45 48 51 20 30 40 50 Performance Notes: 1. Negative sp = Negative static pressure in in. w.g. 2. Performance data is for grille complete with opposed blade damper in the full open position. 3. = Noise Criteria (sound pressure level). Based on 10 db room absorption re 10-12 watts. 4. Blanks [] indicate an level below 15. 5. Tested in accordance with ASHRAE Standard 70-2006 Method of Testing for Rating the Performance of Air Inlets and Outlets. Copyright Price Industries Limited 2011. All Metric dimensions ( ) are soft conversion. E-79

Critical Environments Suggested Specification HORD Hospital Operating Room Diffuser HORD - Hospital Operating Room Diffuser A. Each operating room air curtain system shall consist of linear slot diffusers around the perimeter of surgical zone and laminar flow diffusers directly above the surgical table. Ceiling coverage with laminar flow diffusers shall satisfy ASHRAE 170-2008 requirements. B. The linear slot diffuser plenums and mounting frames shall be constructed out of 14 gauge aluminum, with all end-cap seams continuously welded and ground smooth. All horizontal and vertical plenum corners shall feature ¾ radii to facilitate cleaning. Plenums shall be available in one-piece construction up to 10 ft long with field assembly required for longer sections. Modular plenum systems shall utilize one independent plenum for each side of the system to provide a consistent air curtain barrier. Using multiple independent plenums to satisfy length requirements of any one side shall not be permitted. Plenum inlets shall include room-side-removable stainless steel opposed blade dampers. Damper adjustment shall be possible without removing the diffuser face. The linear slot diffuser face assembly shall feature two slots, an extruded aluminum frame, equalizing baffle and fixed pattern controllers. Adjustable pattern controllers shall not be permitted. C. The laminar flow diffusers shall feature an 18 gauge aluminum plenum and extruded aluminum mounting frame. Inlets shall include stainless steel butterfly dampers that can be adjusted through a removable plug in the diffuser face. The laminar flow diffuser face assembly shall have an extruded aluminum frame, 13% free-area aluminum perforated face and an aluminum equalizing baffle to evenly distribute air across the diffuser face. D. All diffuser face assemblies (linear slot and laminar flow) shall be secured using ¼ turn quick-release fasteners and safety cables for ease of installation and removal. E. All aluminum components of the operating room air system shall have a baked-on powder coat finish. Paint finish must demonstrate no degradation when tested in accordance with ASTM D1308 (covered spot & immersion) and ASTM D4752 (MEK double rub) paint durability tests. HORDSS - Hospital Operating Room Diffuser A. Each operating room air curtain system shall consist of linear slot diffusers around the perimeter of surgical zone and laminar flow diffusers directly above the surgical table. Ceiling coverage with laminar flow diffusers shall satisfy ASHRAE 170-2008 requirements. B. The linear slot diffuser plenums and mounting frames shall be constructed out of 20-gauge/304 stainless steel, with all end-cap seams continuously welded and ground smooth. All horizontal and vertical plenum corners shall feature ¾ radii to facilitate cleaning. Plenums shall be available in one-piece construction up to 10 ft long with field assembly required for longer sections. Modular plenum systems shall utilize one independent plenum for each side of the system to provide a consistent air curtain barrier. Using multiple independent plenums to satisfy length requirements of any one side shall not be permitted. Plenum inlets shall include room-side-removable stainless steel opposed blade dampers. Damper adjustment shall be possible without removing the diffuser face. The linear slot diffuser face assembly shall feature two slots, 20-gauge/304 stainless steel with #4 brushed finish on all exposed surfaces, stainless steel equalizing baffle and fixed pattern controllers. Adjustable pattern controllers shall not be permitted. C. The laminar flow diffusers shall feature a 20 gauge/304 stainless steel plenum and mounting frame. Inlets shall include stainless steel butterfly dampers that can be adjusted through a removable plug in the diffuser face. The laminar flow diffuser face assembly shall include a 20 gauge/304 stainless steel frame and 13% free-area perforated face with #4 brushed finish on all exposed surfaces and a stainless steel equalizing baffle to evenly distribute air across the diffuser face. D. All diffuser face assemblies (linear slot and laminar flow) shall be secured using ¼ turn quick-release fasteners and safety cables for ease of installation and removal. Copyright Price Industries Limited 2011. All Metric dimensions ( ) are soft conversion. E-185

Critical Environments Suggested Specification HORD Hospital Operating Room Diffuser Price HORD-MD Modular Perimeter Air Curtain System Division 23 Heating, Ventilating, and Air Conditioning Section 23 37 13 Diffusers Registers Grills PART 1 GENERAL 1.01 A. The Price HORD-MD O.R. Air Curtain System is supplied as four separate modules, each include a plenum, face assembly, and at least one inlet. Utilizing linear slot diffusers to form a four-sided vertical curtain of clean air creates a barrier that separates the surgical area from the recirculated air outside of the sterile zone, thus minimizing the potential for entrainment of contaminated air. PART 2 PRODUCTS 2.01 HORD-MD Modular Air Curtain A. Each HORD-MD operating room air curtain system shall consist of independent linear slot diffusers around the perimeter of the surgical zone and LFD3 laminar flow diffusers above the surgical table that shall satisfy the ASHRAE Standard 170-2008 requirements. B. The linear slot diffusers and mounting frames shall be 14-gauge aluminum with all end-cap seams continuously welded and ground smooth. All horizontal and vertical plenum corners shall feature ¾ radii to facilitate cleaning. Plenums shall be available in one-piece construction up to 10 long with field assembly required for longer sections. Modular plenum systems shall utilize one independent plenum for each side of the system to provide a consistent air curtain barrier. Using multiple independent plenums to satisfy length requirements of any one side shall not be permitted. C. Plenum inlets shall include room-side removable stainless steel opposed blade dampers. Damper adjustment shall be possible without removal of the diffuser face. The linear slot diffuser face assembly shall feature two slots, extruded aluminum frame, equalizing baffle, and fixed pattern controllers. Adjustable pattern controllers shall not be permitted. D. The laminar flow diffusers shall be Model LFD3, nonaspirating, unidirectional featuring a dual chamber design with continuously welded plenum corners and a fully removable equalization baffle and perforated V basket. Plenum construction shall be 0.050 aluminum with (4) integral hanger tabs for securing the unit to structural supports above the ceiling. Diffuser face frame shall be 0.050 extruded aluminum with a 13% free-area perforated distribution plate. E. All diffuser face assemblies (linear slot and laminar flow) shall be secured to the diffuser mounting frame by the use of snap-in, non-slip ¼ turn fasteners. Two stainless steel safety cables prevent the diffuser face from accidental dropping PART 3 OPTIONS 3.01 Linear Slot Diffusers A. Material / Finish a. Hybrid Aluminum plenum with stainless steel faceplate b. 18 gauge aluminum plenum c. 23 gauge stainless steel plenum B. Plenum End Caps Mechanically fastened Price HORD-CT Continuous Plenum Perimeter Air Curtain System Division 23 Heating, Ventilating, and Air Conditioning Section 23 37 13 Diffusers Registers Grills PART 1 GENERAL 1.01 A. The Price HORD-CT O.R. Air Curtain System is supplied as four modules with corner sections that create a continuous plenum, allowing supply air to pass freely from one plenum section to another, creating a self-balancing system. The continuous plenum system requires only two inlets. PART 2 PRODUCTS 2.01 HORD-CT Continuous Plenum Air Curtain A. A. Each HORD-CT operating room air curtain system shall consist of linear slot diffusers with continuous plenums around the perimeter of the surgical zone, and laminar flow diffusers above the surgical table, satisfying the requirements of ASHRAE Standard 170-2008. B. The linear slot diffusers and mounting frames shall be 14-gauge aluminum with plenum corner elbows that are attached using joiner flanges with integral hanger holes. All horizontal and vertical plenum corners shall feature ¾ radii to facilitate cleaning. Plenums shall be available in one-piece construction up to 10 long with field assembly required for longer sections. C. Plenum inlets shall include room-side removable stainless steel opposed blade dampers. Damper adjustment shall be possible without removal of the diffuser face. D. The linear slot diffuser face assembly shall be extruded aluminum with two slots, engineered to discharge supply air at a 15 pattern away from the surgical zone. A perforated equalization baffle, affixed to the diffuser face, provides uniform velocity through the fixed pattern controllers. Adjustable pattern controllers shall not be permitted. E. The laminar flow diffusers shall be Model LFD3, nonaspirating, unidirectional featuring a dual chamber design with continuously welded plenum corners and a fully removable equalization baffle and perforated V basket. Plenum construction shall be 0.050 aluminum with (4) integral hanger tabs for securing the unit to structural supports above the ceiling. Diffuser face frame shall be 0.050 extruded aluminum with a 13% free-area perforated distribution plate. F. All diffuser face assemblies (linear slot and laminar flow) shall be secured to the diffuser mounting frame by the use of snap-in, non-slip ¼ turn fasteners. Two stainless steel safety cables prevent the diffuser face from accidental dropping PART 3 OPTIONS 3.01 Linear Slot Diffusers A. Material / Finish a. Hybrid Aluminum plenum with stainless steel faceplate b. 18 gauge aluminum plenum c. 23 gauge stainless steel plenum E-186 All Metric dimensions ( ) are soft conversion. Copyright Price Industries Limited 2011.

Critical Environments Suggested Specification Price LFD Laminar Flow Diffuser (Aluminum Construction) PRICE LFD Laminar Flow Diffuser (Aluminum Construction) A. Laminar flow diffuser plenums shall be constructed using 18 gauge aluminum and feature a maximum plenum height of 5.625. The plenum shall be divided into an upper and lower chamber using an internal pressure equalizing baffle to promote consistent flow and face velocity across the 13% free area perforated faceplate. The mounting and face frames shall be constructed using extruded aluminum and utilize corner alignment brackets. The volume control damper shall be a full-flow style damper, adjustable by turning a screw from the room side without removing the diffuser face. B. The diffuser face assembly shall be secured using springloaded ¼ turn fasteners and safety cables for ease of installation and removal. The plenum shall feature integral hanger tabs for securing the unit to structural supports above the ceiling. C. All components of the diffuser shall have a baked-on powder coat finish. Paint finish must demonstrate no deterioration when tested in accordance with ASTM D1308 (covered spot & immersion) and ASTM D4752 (MEK double rub) paint durability tests. Price LFD Laminar Flow Diffuser (Aluminum Construction - Welded) PRICE LFD Laminar Flow Diffuser (Aluminum Construction - welded) A. Laminar flow diffuser plenums shall be divided into an upper and lower chamber using an internal pressure equalizing baffle to promote consistent flow and face velocity across the 13% free area perforated faceplate. The internal pressure equalizing baffle shall be removable to ensure all internal components of the diffuser are accessible for cleaning. Air shall be admitted to the top plenum chamber through an inlet collar and full-flow type butterfly damper. The damper shall be adjustable by turning a screw from the room side without removing the diffuser face. The diffuser plenum shall be constructed of extruded aluminum with mitered, continuously backwelded corners and an aluminum top plate. Maximum plenum height shall be 5.625. The face frames shall be constructed using extruded aluminum and utilize corner alignment brackets. B. The diffuser face assembly shall be secured using springloaded ¼ turn fasteners and safety cables for ease of installation and removal. The plenum shall feature integral hanger tabs for securing the unit to structural supports above the ceiling. C. All components of the diffuser shall have a baked-on powder coat finish. Paint finish must demonstrate no deterioration when tested in accordance with ASTM D1308 (covered spot & immersion) and ASTM D4752 (MEK double rub) paint durability tests. Price LFD Laminar Flow Diffuser (Stainless Steel Construction - Welded) PRICE LFD Laminar Flow Diffuser (Stainless Steel Construction - welded) A. Laminar flow diffuser plenums shall be constructed using 304/2B stainless steel with continuously welded corners and a maximum plenum height of 5.625. The plenum shall be divided into an upper and lower chamber using an internal pressure equalizing baffle to promote consistent flow and face velocity across the 13% free area perforated faceplate. The mounting and face frames shall be constructed using formed 304 stainless steel with #4 brushed finish. The volume control damper shall be a full-flow style stainless steel damper, adjustable by turning a screw from the room side without removing the diffuser face. B. The diffuser face assembly shall be secured using springloaded, ¼ turn fasteners and safety cables for ease of installation and removal. The plenum shall feature integral hanger tabs for securing the unit to structural supports above the ceiling. Copyright Price Industries Limited 2011. All Metric dimensions ( ) are soft conversion. E-187

Critical Environments Suggested Specification Price LFD Laminar Flow Diffuser (Steel Construction) PRICE LFD Laminar Flow Diffuser (Steel Construction) A. Laminar flow diffuser plenums shall be constructed using 24 gauge steel and feature a maximum plenum height of 5.625. The plenum shall be divided into an upper and lower chamber using an internal pressure equalizing baffle mounted directly below the inlet to promote consistent flow and face velocity across the 13% free area perforated faceplate. The mounting and face frames shall be constructed using formed steel. The volume control damper shall be a full-flow type damper, adjustable by turning a screw from the room side without removing the diffuser face. B. The diffuser face assembly shall be secured using springloaded, ¼ turn fasteners and safety cables for ease of installation and removal. The plenum shall feature integral hanger tabs for securing the unit to structural supports above the ceiling. C. All components of the diffuser shall have a baked-on powder coat finish. Paint finish must demonstrate no deterioration when tested in accordance with ASTM D1308 (covered spot & immersion) and ASTM D4752 (MEK double rub) paint durability tests. Price LFD3 Laminar Flow Diffuser Price LFD3 Laminar Flow Diffusers Division 23 Heating, Ventilating, and Air Conditioning Section 23 37 13 Diffusers Registers Grills PART 1 GENERAL 1.01 A. Laminar Flow Diffusers shall be non-aspirating, unidirectional type, providing a uniform vertical piston of air at controlled low velocities with minimal entrainment of room air. Primary applications include: Healthcare, laboratory, and cleanrooms, where high capacity and low turbulence supply air is required.the diffuser face assembly shall be secured using ¼ turn fasteners and safety cables for ease of installation and removal. The plenum shall feature hanger tabs for securing the unit to structural supports above the ceiling. PART 2 PRODUCTS 2.01 Perforated Laminar Flow Diffusers A. Non-aspirating, unidirectional laminar flow diffuser consisting of a dual chamber design. Plenum shall be divided into an upper and lower chamber utilizing an equalization baffle and perforated basket to promote consistent airflow and face velocity. The internal equalization baffle and perforated basket shall be fully removable for cleaning of entire diffuser plenum per ASHRAE Standard 170. Removal of equalization baffle and perforated basket shall be done through the use of internal spring clips that require no tools. Diffusers without full access to internal surfaces for cleaning shall not be permitted. B. Air shall be admitted to the top plenum chamber through an inlet collar and cone valve, adjustable by turning a screw from the room side without having to remove the diffuser face. The diffuser plenum shall be constructed of (aluminum / stainless steel) with continuously welded corners. A solid equalization baffle of (aluminum / stainless steel) with two rectangular cutouts and an (aluminum / stainless steel) perforated basket with internal V plate separate the upper and lower chambers ensuring even air distribution through the entire diffuser faceplate. Construction of the diffuser face frame shall be of (extruded aluminum / stainless steel) and utilize corner alignment brackets. The diffuser plenum shall feature (4) hanger tabs for securing the unit to structural supports above the ceiling. C. The perforated distribution plate shall be (aluminum / stainless steel) that shall be secured to the face frame using ¼ turn fasteners with anti-slip, snap-in retainers and stainless steel safety cables for ease of installation and removal. The standard perforations shall be 13% free area for 20-40 /ft². D. All components of the aluminum diffuser shall be finished with B12 white powder coat. Paint finish must demonstrate no deterioration when tested in accordance with ASTM D1308 (covered spot & immersion) and ASTM D4752 (MEK double rub) paint durability tests. All components of stainless steel shall be mill finish, with #4 finish on visible outer frames. E-188 All Metric dimensions ( ) are soft conversion. Copyright Price Industries Limited 2011.