Products
1" (25mm) Insulating with RoomSide Low-E VRE4-38
1" (25mm) Insulating with RoomSide Low-E VRE4-38
1/4" (6mm) bronze with VRE-38 #2
1/2" (13.2mm) space - air filled
1/4" (6mm) RoomSide™ Low-E #4
Reflected Color
Transmitted Color
Performance Data
Show data as:
Transmittance
Visible Light
22%
Solar Energy
11%
UV
5%
Reflectance
Visible Light-Exterior
19%
Visible Light-Interior
20%
Solar Energy
22%
NFRC U-Value
Winter
0.23 (hr x sqft x °F)
Summer
0.20 (hr x sqft x °F)
Shading Coefficient
0.19
Relative Heat Gain
42Btu/(hr x sqft)
Solar Heat Gain Coefficient (SHGC)
0.17
LSG
1.29
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.