NFRC - Welcome

Welcome to The National Fenestration Rating Council (NFRC)
We provide a Fair and Accurate Labeling System for Certifying the Energy Efficiency of Fenestration Products -- Windows, Doors, Skylights, and Attachments.

Fenestration: Products that fill openings in a building envelope, including windows, doors, skylights, and curtain walls designed to permit the passage of air, light, vehicles, or people.

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