AAMA THERMAL PERFORMANCE REPORT. Rendered to: UNITED STATES ALUMINUM. SERIES/MODEL: 3150 Curtain Wall TYPE: Glazed Wall System

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1 AAMA THERMAL PERFORMANCE REPORT Rendered to: UNITED STATES ALUMINUM SERIES/MODEL: 3150 Curtain Wall TYPE: Glazed Wall System Report No: Report Date: 08/22/ Derry Court York, PA phone: fax:

2 AAMA THERMAL PERFORMANCE REPORT Rendered to: UNITED STATES ALUMINUM 200 Singleton Drive Waxahachie, Texas Project Summary: Simulation Specimen Description: Report No: Report Date: 08/22/08, Inc. (ATI) was contracted by United States Aluminum to provide U- Factor and Solar Heat Gain Coefficient thermal performance ratings on the 3150 Curtain Wall Glazed Wall System. The thermal performance ratings were determined in accordance with AAMA , Standard Practice for Determining the Thermal Performance Characteristics of Fenestration Systems Installed in Commercial Buildings. Reference Documents: AAMA , Standard Practice for Determining the Thermal Performance Characteristics of Fenestration Systems Installed in Commercial Buildings NFRC , Procedure for Determining Fenestration Product U-Factors NFRC , Procedure for Determining Fenestration Product Solar Heat Gain Coefficient and Visible Transmittance at Normal Incidence NFRC Technical Interpretation TI , Curtain Wall Simulation Series/Model: 3150 Curtain Wall Type: Glazed Wall System Frame Material: Aluminum Thermally Improved Framing System Specimen Size: 2000mm wide by 2000mm high (78-3/4" by 78-3/4") Configuration: Two vision lites separated by one intermediate vertical Drawing Reference: U.S. Aluminum Drawing: 3150CW (Int Horiz 060 & Int Vert 048) 130 Derry Court York, PA phone: fax:

3 AAMA Page 2 of 7 United States Aluminum 3150 Curtain Wall - Glazed Wall System System U-Factor vs. Percentage of Vision Area COG U-Factor System U-Factor (Btu/h ft 2 ºF) Vision Area / Total Area (%)

4 AAMA Page 3 of 7 United States Aluminum 3150 Curtain Wall - Glazed Wall System System SHGC vs. Percentage of Vision Area COG SHGC System SHGC Vision Area / Total Area (%) System VT vs. Percentage of Vision Area COG VT System VT Vision Area / Total Area (%)

5 AAMA Page 4 of 7 United States Aluminum 3150 Curtain Wall - Glazed Wall System Size Specific U-Factor Matrix* Glazing Option Center of Glass U-Factor Overall U-Factor Size Specific SHGC Matrix* Size Specific VT Matrix* Center of Glass SHGC Overall SHGC Center of Glass VT Overall VT *Size Specific U-Factor, SHGC, and VT Matrices are based on the standard Glazed Wall System specimen size of 2000mm wide by 2000mm high (78-3/4" by 78-3/4"). This represents 90.6% Vision Area / Total Area.

6 AAMA Page 5 of Vision Area Data NFRC " by Vision Area " by " Frame U-Factor Edge U-Factor 70% Vision Area 23.45" by 23.45" Total Product U-Factor 78.74" 95% Option No. COG Temperature COG U-Factor Cross Section 0.28 Frame Height

7 AAMA Page 6 of 7 Detailed drawings, simulation data disks, and a copy of this report will be retained by ATI for a period of four years. The above results are the exclusive property of the client so named herein and are applicable to the sample simulated. This report does not constitute an opinion or endorsement by this laboratory. This report may not be reproduced except in full without the approval of ATI. For ARCHITECTURAL TESTING, INC.: SIMULATED BY: REVIEWED BY: Jason Mitzel Simulation Technician Michael J. Thoman Director - Simulations and Thermal Testing Simulator In Responsible Charge JAM:ksl Attachments (pages): Appendix A: Drawings and Bills of Material (3)

8 AAMA Page 7 of 7 Revision Log Rev. # Date Page(s) Revision(s).01 R0 8/22/2008 All Original Report Issue

9 All drawings and Bills of Material used in simulating this product are enclosed in this Appendix. Appendix A

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