ENERGY STAR - qualified windows, doors, and skylights save you energy and money, increase the comfort ...
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Provides consumers, builders, and code officials with energy performance ratings in a comparable, easy-to-read format.
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These organizations test, certify, and label various fenestration products for either their design performance or their energy performance.
Certifies all types of fenestration products including wood, fiberglass, aluminum, vinyl, and any combo thereof. Certification through NAMI is only valid when the product bears the NAMI Certification label.
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