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What type of spacers, framing material, or glass type should I look for?

April 26, 2017framing glass look material spacers type

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What type of spacers, framing material, or glass type should I look for?

1 Answer

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Just look for the ENERGY STAR label. The ENERGY STAR criteria are based on the performance of the entire window, so spacers, framing material, and glass type are already taken into account. Use the U-factor and Solar Heat Gain Coefficient (SHGC) to further differentiate between ENERGY STAR qualified products. Learn more about U-factor and SHGC.