VZE18-42 1" (25mm) Insulating - Viracon
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1" (25mm) Insulating VZE18-42

1" (25mm) Insulating VZE18-42

1/4" (6mm) Optiblue® with VE-42 #2
1/2" (13.2mm) space - argon filled
1/4" (6mm) clear with VZE-SC #3

Reflected Color
Transmitted Color
Diagram

Performance Data

Show data as:

Transmittance

Visible Light
24%
Solar Energy
12%
UV
4%

Reflectance

Visible Light-Exterior
12%
Visible Light-Interior
10%
Solar Energy
18%

NFRC U-Value

Winter
0.24 (hr x sqft x °F)
Summer
0.20 (hr x sqft x °F)
Shading Coefficient
0.23
Relative Heat Gain
50Btu/(hr x sqft)
Solar Heat Gain Coefficient (SHGC)
0.20
LSG
1.20

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.