The Efficient Windows Collaborative (EWC) is a coalition of window, door, skylight, component manufacturers, research organizations, federal, state and local agencies, and others interested in expanding the market for high-efficiency fenestration products. www.efficientwindows.org
The National Fenestration Rating Council (NFRC) administers a voluntary window rating/labeling program to produce window ratings that can be directly compared due to identical evaluation procedures. www.nfrc.org
If home furnishings could talk, they'd tell you that the sun's punishing UV rays can prematurely fade expensive wood floors, curtains, rugs and cherished mementos. But now there's ClimaGuard SPF® residential window glass, offering complete UV protection and plenty of natural daylight.
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