Report No: NCTL S NFRC THERMAL TEST SUMMARY REPORT Expiration Date: 07/14/15. Test Specimen

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1 MGM INDUSTRIES, INC. Report No: NCTL S NFRC THERMAL TEST SUMMARY REPORT Expiration Date: 07/14/15 Test Specimen NFRC Code Manufacturer: MGM Industries, Inc. Series/Model: 8017 Window Type: Double Hung VSDH Frame Composition: Vinyl VY Sash/Vent/Panel Composition: Vinyl VY Thermal Break Mat'l: Not Applicable Overall Size: mm (47-1/4 ) wide by mm (59 ) high Glazing Description 3/4 Overall w/low E and Argon No. of Glazing Layers (including films): 2 2 Primary Glazing: Double Glazed DG Spacer Type: Coated U-Shaped Steel CU-D Gap Fill 1: Argon/Air (95% Double Probe) ARG Gap Fill 2: Not Applicable Glass/Film Thicknesses (ext to int): 0.090, Air Gap 1: Air Gap 2: Not Applicable Secondary Glazing: Not Applicable Low Emissivity Coatings: Surface 3: Procedure: Standardized Thermal Transmittance (U st ) was determined using the NFRC procedure with a temperature of 69.8 ± 0.5 F on the room side of the specimen and -0.4 ± 0.5 F on the weather side of specimen. The net air leakage across the test specimen was 0.0 cfm. Test Results: Results of the test period on 07/14/11 using the Equivalent CTS Method: Thermal transmittance at test conditions (U s ): 0.29 BTU/hr/ft 2 / F Standardized thermal transmittance of test specimen (U st ): 0.28 BTU/hr/ft 2 / F Reference should be made to Thermal Performance Test Report Number NCTL for complete specimen description and test data. NATIONAL CERTIFIED TESTING LABORATORIES STEVEN H. COBLE Simulator In Responsible Charge

2 THERMAL PERFORMANCE TEST REPORT Report No: NCTL Test Date: 07/14/11 Report Date: 07/27/11 Expiration Date: 07/14/15 Client: MGM Industries, Inc. 287 Freehill Road Hendersonville, TN Test Specimen: MGM Industries, Inc.'s Series 8017 Tilt Double Hung Vinyl Prime Window with Low E and Argon. Test Method: NFRC Procedure for Measuring the Steady-State Thermal Transmittance of Fenestration Systems (2010 edition)". MODEL/ 8017 TEST SPECIMEN DESCRIPTION CONFIGURATION: FRAME SIZE: TOP SASH SIZE: BOTTOM SASH SIZE: FRAME & SASH JOINT CONSTRUCTION: FRAME: HEAD/JAMB: SILL/JAMB: SASH: GLAZING COMPONENTS: OVERALL: GLASS THICKNESS: COATING: Double Hung mm (47-1/4 ) wide by mm (59 ) high mm (44-1/4 ) wide by mm (28-1/2 ) high mm (45-5/16 ) wide by mm (28-3/4 ) high Extruded vinyl Mitered, welded (3) Screw butt-type with closed cell foam pad (1) Screw butt-type with closed cell foam pad mm (0.750 ) nominal (2) Lites of 2.29 mm (0.090 ) nominal annealed A Cardinal 366 sputter-type low emissivity coating (e=0.022 per client) was applied to glazing surface no. 3 SPACER TYPE/SIZE: Coated U-Shaped Steel (CU-D) mm (0.570 ) FILL: Argon - 95% double probe per client GLAZING SYSTEM: Channel glazed with dual durometer vinyl triple glazing fins

3 MGM Industries, Inc. 2 of 5 NCTL WEATHERSTRIP: SIZE: SIZE: SIZE: SIZE: OPERATING HARDWARE: LOCKS KEEPER BALANCE & PIVOT BAR BALANCE PIVOT BAR AUXILIARY: (1) Strip center fin 6.35 mm (0.250 ) high Head (2) Strips center fin 4.83 mm (0.190 ) high Interior meeting rail (2) Strips center fin 6.35 mm (0.250 ) high Stiles (1) Strip center fin 5.33 mm (0.210 ) high Exterior face of stiles (1) Strip of vinyl foam bulb with single leaf Bottom rail (1) Open cell foam block mm (1.75 ) x 12.7 mm (0.5 ) x 12.7 mm (0.5 ) Ends of sill Metal cam-type mm (7 ) from each end of the interior meeting rail Metal Exterior meeting rail at the lock positions (1) Block and tackle Each interior and exterior jamb track (1) Die-cast T-shaped Each end of the exterior meeting rail and bottom rail Plastic spring loaded tilt latch with thumb actuator Ends of the top rail and interior meeting rail Rigid vinyl sash stop Top of each interior jamb track and at the bottom of each exterior jamb track and (2) at exterior head track Rigid vinyl track cover with vertical head leg Interior head track Rigid vinyl end cap Ends of sill and sill nose Extruded aluminum nail fin Sill Sill adapter with vertical sill leg Sill

4 MGM Industries, Inc. 3 of 5 NCTL REINFORCEMENT: WEEP HOLES: SIZE: SIZE: SIZE: No reinforcement employed 6.35 mm (0.25 ) wide by 3.18 mm (0.125 ) high 7.95 mm (0.313 ) from each end of sill nose (2) 4.78 mm (0.188 ) diameter mm (0.75 ) from each end of the exterior meeting rail 4.78 mm (0.188 ) diameter mm (0.75 ) from each end of the bottom rail SIZE: 9.53 mm (0.325 ) wide by 1.60 mm (0.063 ) mm (0.875 ) from each end of the bottom rail INTERIOR & EXTERIOR FINISH: SEALANT: MATERIAL: White vinyl (PVC) Sill end caps and sill nail fin Silicone Sealant SPECIMEN PREPARATION PRIOR TO TEST The test specimen was pre-conditioned at ambient laboratory conditions prior to the test. The surround panel-to-specimen interfaces were sealed with a non-reflective tape. The specimen was sealed on the interior with a caulk sealant resulting in a measured net air leakage of 0.0 cfm per square foot. TEST PARAMETERS Tests to determine the Standardized Thermal Transmittance (U st ) of the specimen were performed in the guarded hot box apparatus located at the York, PA facility. The most recent calibration of the hot box apparatus was in February 16, The thermal performance evaluations were completed in accordance with the NFRC 102 procedure using a dynamic wind perpendicular to the specimen on the weather side and simulated natural convection on the room side. A zero static pressure differential (0.00" ± 0.04" H 2 O) was maintained across the specimen during the test by pressurizing the metering box on the room side. Data was collected over two successive 2 hour periods after 4 hours of steady state conditions as defined in section of the NFRC 102 procedure were achieved. The test was considered completed when the data of the successive 2 hour periods also satisfied the criteria defined in section of the NFRC 102 procedure. GLASS THICKNESS AND GLAZING DEFLECTION: Glass Thicknesses Glazing Deflection Before Test Glazing Deflection After Test Top Sash 0.090, Bottom Sash 0.090, PROJECTED FRAME DIMENSIONS OF MEMBERS: Member: Bottom Jamb Head Meeting Rail Sill Top Jamb Dimension: TEST DURATION: The test chamber environmental systems were initiated at 0923 on 07/14/11. The test conditions were considered stable for two consecutive two hour test periods from and on 07/14/11. The thermal performance test results were derived from the test period.

5 MGM Industries, Inc. 4 of 5 NCTL Areas: Test Specimen Projected Area (A s ): ft² Test Specimen Interior Exposed (Wetted) Surface Area (A int ): 0 ft² Test Specimen Exterior Exposed (Wetted) Surface Area (A ext ): 0 ft² Metering Box Opening Area (A mb ): ft² Metering Box Baffle Area (A b1 ): ft² Surround Panel Interior Exposed Area (A sp ): ft² Exposed Area of Mods to Surround Panel Opening: 6.55 ft² Test Conditions: Heat Flows: Average Room Side Air Temperature: 69.9 F Average Weather Side Air Temperature: -0.3 F Average Guard Box Air Temperature: 70.4 F Average Warm Side Surround Panel Temperature: 66.2 F Average Cold Side Surround Panel Temperature: -0.0 F Metering Box Average Relative Humidity: 24 % Measured Weather Side Wind Velocity: 14.3 mph Static Pressure Difference Across Specimen (assumed) : 0.0 H 2 0 Heat Input Rate to Metering Box (Q total ): BTU/hr Surround Panel Heat Flow (Q sp ): 87.8 BTU/hr Surround Panel Thickness: Inches Surround Panel Conductance: BTU/hr/ft²/ F Metering Box Heat Flow (Q mb ): BTU/hr Flanking Loss Heat Flow (Q fl ): 37.7 BTU/hr Net Test Specimen Heat Flow (Qs): BTU/hr EMF vs Heat Flow Equation: y= * EMF Test Results & Calculated Test Data: Emittance of Glass (e 1 ): 0.84 Warm Side Baffle Emittance (e b1 ): 0.96 Equivalent Room Side Surface Temperature: 55.4 ºF Equivalent Weather Side Surface Temperature: 3.5 ºF Room Side Baffle Surface Temperature: 68.6 ºF Measured Room Side Surface Conductance (h h ): 1.39 BTU/hr/ft²/ F Measured Weather Side Surface Conductance (h c ): 5.29 BTU/hr/ft²/ F Test Specimen Thermal Conductance (C s ): 0.39 BTU/hr/ft²/ F Convection Coefficient (K): Radiative Test Specimen Heat Flow (Q r1 ): BTU/hr Convective Test Specimen Heat Flow (Q c1 ): BTU/hr Radiative Heat Flux of Test Specimen (q r1 ): BTU/hr/ft² Convective Heat Flux of Test Specimen (q c1 ): 9.80 BTU/hr/ft² Standardized Room Side Surface Conductance (h STh ): 1.21 BTU/hr/ft²/ F Standardized Weather Side Surface Conductance (h STc ): 5.28 BTU/hr/ft²/ F Test Specimen Thermal Transmittance (U s ): 0.29 BTU/hr/ft²/ F Test Specimen Standardized Thermal Transmittance (U ST ): 0.28 BTU/hr/ft²/ F

6 MGM Industries, Inc. 5 of 5 NCTL This test method does not include procedures to determine the heat flow due to either air movement through the specimen or solar radiation effects. As a consequence, the thermal transmittance results obtained do not reflect performances which may be expected from field installations due to not accounting for solar radiation, air leakage effects, and the thermal bridge effects that may occur due to the specific design and construction of the fenestration system opening. Therefore, it should be recognized that the thermal transmittance results obtained from this test method are for ideal laboratory conditions and should only be used for fenestration product comparisons and as input to thermal performance analyses which also include solar, air leakage, and thermal bridge effects. An estimate of the experimental uncertainty for these results is available upon request. Per the client, the test specimen described in this report was a production line unit submitted for initial certification and plant qualification and is described as tested. Detailed drawings were available for laboratory records and compared to the test specimen at the time of this report. A copy of this report along with representative sections of the test specimen will be retained by NCTL for a period of four (4) years. The results obtained apply only to the specimen tested. This report may not be reproduced, except in full, without the written approval of National Certified Testing Laboratories. NCTL is a testing lab accredited by IAS to ISO/IEC and assumes that all information provided by the client is accurate and does not guarantee or warranty any product tested or installed. Testing described in this report was conducted in full compliance with NFRC requirements; any deviations are noted. ASTM C 1363 and C 1199 testing was performed with published NFRC deviations. Ratings included in this report are for submittal to an NFRC licensed IA for certification purposes and are not meant to be used for labeling purposes. Only those values identified on a valid Certification Authorization Report (CAR) are to be used for labeling purposes. NATIONAL CERTIFIED TESTING LABORATORIES STEVEN H. COBLE Simulator In Responsible Charge JL/hl ROBERT H. ZEIDERS, P.E. Vice-President Engineering & Quality Person-in-Responsible Charge

7 ATTACHMENT 1 Section 1: Component Drawings, with Applicable Part Numbers, Manufacturing and Modeling Details, were Reviewed (as submitted) for Product Verification (Reference: NCTL ) See Attached Documentation; any deviations noted. Note: The above referenced component drawings along with representative sections of the test specimen will be retained per procedure by NCTL. This testing facility assumes that all information provided by the client is accurate. Section 2: Identification Date Page & Revision Original Issue 07/27/11 Not Applicable

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