VRE24-38 1" (25mm) Insulating with RoomSide Low-E - Viracon
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1" (25mm) Insulating with RoomSide Low-E VRE24-38

1" (25mm) Insulating with RoomSide Low-E VRE24-38

1/4" (6mm) Optiwhite™ with VRE-38 #2
1/2" (13.2mm) space - air filled
1/4" (6mm) RoomSide™ Low-E #4

Reflected Color
Transmitted Color
Diagram

Performance Data

Show data as:

Transmittance

Visible Light
39%
Solar Energy
21%
UV
12%

Reflectance

Visible Light-Exterior
45%
Visible Light-Interior
22%
Solar Energy
58%

NFRC U-Value

Winter
0.23 (hr x sqft x °F)
Summer
0.20 (hr x sqft x °F)
Shading Coefficient
0.28
Relative Heat Gain
59Btu/(hr x sqft)
Solar Heat Gain Coefficient (SHGC)
0.24
LSG
1.63

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.