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What does it mean if windows are Green Seal Certified and/or Energy Star Rated?

April 26, 2017certified energy mean rated seal star Windows

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What does it mean if windows are Green Seal Certified and/or Energy Star Rated?

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Green Seal Certification is the national nonprofit environmental organization that awards a Green Seal to products that meet environmental standards for energy efficiency. Energy Star® is a registered trademark of the U.S. Environmental Protection Agency. Energy Star windows are rated by the National Fenestration Rating Council, an independent industry-wide standard for rating windows based on thermal insulating performance. Our windows are all Energy Star qualified for all climate zones.