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1-3/4" (44mm) Triple Insulating (Double Coating) VP1-18

1-3/4" (44mm) Triple Insulating (Double Coating) VP1-18

1/4" (6mm) clear with VP-18 #2
1/2" (13.2mm) space - argon filled
1/4" (6mm) clear with VE-85 #4
1/2" (13.2mm) space - argon filled
1/4" (6mm) clear

Reflected Color
Transmitted Color

Performance Data

Show data as:

Transmittance

Visible Light
15%
Solar Energy
8%
UV
5%

Reflectance

Visible Light-Exterior
24%
Visible Light-Interior
38%
Solar Energy
20%

NRFC U-Value

Winter
0.17 (hr x sqft x °F)
Summer
0.18 (hr x sqft x °F)
Shading Coefficient
0.17
Relative Heat Gain
36Btu/(hr x sqft)
Solar Heat Gain Coefficient (SHGC)
0.15
LSG
1

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.