GREENBELT, Md. (November 15, 2010) – The NFRC Board of Directors has approved technical procedures for the development of U-factor, solar heat gain coefficient (SHGC), and visible transmittance (VT) ...
The National Fenestration Rating Council (NFRC) introduced a new process that will greatly reduce the time needed for simulating energy performance. This will help get innovative new windows, doors, ...
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