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1" (25mm) Insulating VE31-45

1" (25mm) Insulating VE31-45

1/4" (6mm) UltraClear® with VE-45 #2
1/2" (13.2mm) space - argon filled
1/4" (6mm) UltraClear®

Reflected Color
Transmitted Color

Performance Data

Show data as:

Transmittance

Visible Light
42%
Solar Energy
28%
UV
14%

Reflectance

Visible Light-Exterior
8%
Visible Light-Interior
30%
Solar Energy
32%

NRFC U-Value

Winter
0.25 (hr x sqft x °F)
Summer
0.21 (hr x sqft x °F)
Shading Coefficient
0.36
Relative Heat Gain
75Btu/(hr x sqft)
Solar Heat Gain Coefficient (SHGC)
0.31
LSG
1.35

Viracon's solar and optical performance data is center of glass data based on the National Fenestration Rating Council measurement standards, calculated using Lawrence Berkeley National Laboratory's (LBNL) WINDOW 7 software.

Winter and Summer U-Values are the only performance values available for spandrel glazing. The U-Values for spandrel glazing are the same as the corresponding vision unit. The spandrel color does not impact U-Value.