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The National Fenestration Rating Council (NFRC) takes pride in its uniquely independent certification process, because it fairly, accurately and credibly rates the energy performance of windows, curtain walls, doors, skylights and fenestration attachments. NFRC is proud of its 20-year relationship with the International Code Council and building officials who rely on NFRC as a trusted, independent source for verifying energy performance ratings. To learn more, please visit www.nfrc.org. | ||