Each Marvin window and door is individually made to order. Marvin has unparalleled value on the market, offering craftsmanship-quality structures, energy-efficient technology, and the industry’s richest variety of shapes, styles, sizes and options. As part of the Marvin family of brands, Integrity Windows and Doors is not ashamed of its name and is known for producing reliable, durable and energy efficient windows and doors. Integrity products are made from Ultrex, a patented draw-molded fiberglass that offers superior performance and durability over vinyl, roll foam aluminum and other fiberglass composites. Use Ultrex to create windows and doors that withstand elements without showing signs of aging or wear.
