Nfrc.org
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- Title
- NATIONAL FENESTRATION RATING COUNCIL
- Meta Description
- The National Fenestration Rating Council provides accurate information to measure and compare energy performance of windows, doors and skylights.
- Meta Keywords
- NFRC, nfrc, National Fenestration Rating Council, fenestration, rating windows, rating skylights, rating doors, windows, doors, skylights, window, door, skylight, houses, homes, efficient, glass, glazing, energy, efficient windows, energy efficient, energy efficiency, energy efficient windows, residential windows, commercial windows, windows and glazings, certified, certified products, NFRC label, Solar Heat Gain Coefficient, SHGC, Visible Transmittance, VT, Condensation Resistance, CR, U-factor, u factor, Air Leakage, AL, What is the IVP?, IVP, Independent Verification Program