VRE1-4322 1" (25mm) Insulating - Viracon
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1" (25mm) Insulating VRE1-4322

1" (25mm) Insulating VRE1-4322

1/4" (6mm) clear with VRE-4322 #2
1/2" (13.2mm) space - air filled
1/4" (6mm) clear

Reflected Color
Transmitted Color
Diagram

Performance Data

Show data as:

Transmittance

Visible Light
43%
Solar Energy
17%
UV
7%

Reflectance

Visible Light-Exterior
25%
Visible Light-Interior
19%
Solar Energy
38%

NFRC U-Value

Winter
0.29 (hr x sqft x °F)
Summer
0.26 (hr x sqft x °F)
Shading Coefficient
0.25
Relative Heat Gain
54Btu/(hr x sqft)
Solar Heat Gain Coefficient (SHGC)
0.22
LSG
1.95

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.