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As part of the Marvin family of product lines, Integrity windows and doors share the same heritage of quality, reliability and fine workmanship. Integrity from Marvin is able to offer both performance and beauty because of a revolutionary material created to be virtually impervious to the ravages of time, heat, cold and pressure. This material is called Ultrex.
Combining Ultrex with classic wood interiors and designs, Marvin creates low maintenance windows and doors that are built to do more than look beautiful. They're built to perform.
Because of its unique composition, Ultrex, withstands changes in temperature and pressure. Made from glass fibers, Ultrex is non-conductive and acts as an insulator, much like the fiberglass insulation in your walls, and protects the interior of your home from exterior temperature changes.
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