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1" (25mm) Insulating VRE18-4322

1" (25mm) Insulating VRE18-4322

1/4" (6mm) Optiblue® with VRE-4322 #2 and 40% coverage V933 Warm Gray #2
1/2" (13.2mm) space - argon filled
1/4" (6mm) clear

Reflected Color
Transmitted Color

Performance Data

Show data as:

Transmittance

Visible Light
20%
Solar Energy
9%
UV
3%

Reflectance

Visible Light-Exterior
13%
Visible Light-Interior
21%
Solar Energy
22%

NRFC U-Value

Winter
0.25 (hr x sqft x °F)
Summer
0.21 (hr x sqft x °F)
Shading Coefficient
0.16
Relative Heat Gain
35Btu/(hr x sqft)
Solar Heat Gain Coefficient (SHGC)
0.14
LSG
1.43

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.