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1" (25mm) Insulating VP1-22

1" (25mm) Insulating VP1-22

1/4" (6mm) clear with VP-22 #2 and 60% coverage V175 High-Opacity White #2
1/2" (13.2mm) space - argon filled
1/4" (6mm) clear

Reflected Color
Transmitted Color

Performance Data

Show data as:

Transmittance

Visible Light
12%
Solar Energy
9%
UV
6%

Reflectance

Visible Light-Exterior
28%
Visible Light-Interior
38%
Solar Energy
21%

NRFC U-Value

Winter
0.41 (hr x sqft x °F)
Summer
0.43 (hr x sqft x °F)
Shading Coefficient
0.23
Relative Heat Gain
53Btu/(hr x sqft)
Solar Heat Gain Coefficient (SHGC)
0.20
LSG
0.60

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.