* Cardinal XL Edge Dual Seal Insulated Glass Units without grids.
“U” Factor: The rate of heat flow through a given glazing. The lower the number, the better the insulating quality.
Solar Heat Gain Coefficient: The fraction of direct solar radiation that enters a building thru the glass as heat. Lower numbers mean the glazing lets less heat in.
Visible Light Transmittance: Measures the amount of light transmitted through the glass. VLT is expressed as a number between 0 and 1. The higher the VLT, the more light is transmitted.
800 AAMA Certified Window Performance Ratings
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Uniform Structural
Load MPH |
5 Gal/Ft/Hour=8"/Hr
Water Resistance MPH
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Horizontal Slider |
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800 Horizontal Slider XO |
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4.5 PSF = 42 MPH
AIR = .22 cfm/ft∧2
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| 800CAL/810 Horizontal Slider XO |
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5.25 PSF = 45 MPH
AIR = .12 cfm/ft∧2
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| 800
Horizontal Slider XOX |
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4.5 PSF = 42 MPH
AIR = .12 cfm/ft∧2
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| 800
Single Hung |
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5.25 PSF = 45 MPH
AIR = .17 cfm/ft∧2
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| 800
Single Hung |
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4.5 PSF = 42 MPH
AIR = .16 cfm/ft∧2
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| 800
Single Hung |
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3.75 PSF = 38 MPH
AIR = .14 cfm/ft∧2
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| 800
Single Hung Picture Window Single Hung |
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4.5 PSF = 42 MPH
AIR = .14 cfm/ft∧2
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| 800
Fixed Picture Window |
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12 PSF = 69 MPH
AIR = .01 cfm/ft∧2
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| 800
Fixed Picture Window |
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12 PSF = 69 MPH
AIR = .01 cfm/ft∧2
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