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Integrity Windows & Doors
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Only Integrity windows and doors use the best available materials to make the most efficient windows our standard product. Making our products a good investment today, a great one tomorrow.
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ULTREX DIFFERENCE
The most remarkable things about this material are what it doesn't do:
- Absolute minimal expansion and contraction give Ultrex the advantage over other window materials.
- Remarkably non-conductive to insulate temperature extremes from the glass--and your home's interior.
ENERGY STAR APPROVED 
Integrity didn't just earn the important Energy Star rating - our products exceed it. Twice as efficient as the average window a decade ago, Integrity windows and doors earned the rating by the U.S. Department of Energy and U.S. Environmental Protection Agency for actually reducing energy use.
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LOW E II AND ARGON GAS
Other window companies let you choose to pay more for the advantages of Low E II and argon gas. Integrity made these efficiency measures standard in every door and window we make. Here's why:
- In cold weather, it absorbs low-angle winter sun into the home for more heat.
- In hot weather, it filters high-angle light and reflects absorbed heat back outside for a cool interior.
- In every climate, it filters UV rays to reduce damage and fading to upholstery and carpets.
- Argon gas and a warm edge spacer are one of the industry's most effective glazings for maximum home efficiency and comfort.
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NFRC RATINGS
Integrity earned one of the highest possible ratings, based on factors from light transmission and heat loss or gain under varying conditions, as judged by the National Fenestration Rating Council. It's a standard-setting non-profit trade organization, of which Marvin is a founding member.
Click to see some of the options available for Integrity products.
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