NFRC
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Choosing Window Glazing
How to specify the right U-factor and SHGC for your climate zone
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All About U-Factor
It’s not a simple topic, so get ready to untangle a few knotted threads
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Rating Windows for Condensation Resistance
Window shoppers are confused by the two rival methods for measuring condensation resistance
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New Criteria for Window and Door Tax Credits Kick in Next Month
Existing qualifying criteria for the federal tax credit will remain in place through May 31 – a little longer than expected New qualifying criteria for federal tax credits on the…