WINDOW 7.8.71 and THERM 7.8.71

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  NFRC Issues Approval for Use of WINDOW/THERM 7.8.71

  23 Aug 2023Editorial Staff

  The National Fenestration Ratings Council (NFRC) board has approved Lawrence Berkeley National Laboratory’s (LBNL) WINDOW 7.8.71 and THERM 7.8.71 for immediate use. Users could begin…