Use the following product selection tool to find specific glass products by their performance values. Filter by Visible Light Transmission, Solar Heat Gain, Reflectance and U-Value to find a product that meets your requirements.


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Visible Light Transmission (VLT)
2% - 91%
Solar Heat Gain Coefficient (SHGC)
0.08 - 0.9
Exterior Reflectance
5% - 47%
0.12 - 0.93
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Product CodeGlass ConstructionPrintingArgonVisibleUVExteriorInteriorWinterSummerWinterSummerSHGCLSGActions


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.


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