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1" (25mm) Insulating VP33-13

1" (25mm) Insulating VP33-13

1/4" (6mm) Majestic Grey with VP-13#2
1/2" (13.2mm) space - argon filled
1/4" (6mm) clear

Reflected Color
Transmitted Color

Performance Data

Show data as:

Transmittance

Visible Light
10%
Solar Energy
7%
UV
5%

Reflectance

Visible Light-Exterior
18%
Visible Light-Interior
46%
Solar Energy
14%

NRFC U-Value

Winter
0.39 (hr x sqft x °F)
Summer
0.40 (hr x sqft x °F)
Shading Coefficient
0.21
Relative Heat Gain
48Btu/(hr x sqft)
Solar Heat Gain Coefficient (SHGC)
0.18
LSG
0.56

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.