Ultrex pultruded fiberglass, a material patented nearly 20 years ago when Marvin pioneered the fiberglass windows and door category. Integrity and Infinity windows have led the category ever since with a commitment to a product that is tough, smart, long lasting, and worry-free.
Infinity products are designed to replicate the look of traditional wood windows and doors while providing modern features and low-maintenance performance.
A stronger frame constructed with Ultrex means we’re able to reduce frame thickness and increase the glass surface area of our windows and doors – yielding a larger view.
Complement any project or design with an array of high-quality wood options.
If your project requires the one-of-a-kind look of an unusual wood species, we offer many beautiful and unique wood options. Available on Marvin and Integrity products
Ultrex pultruded fiberglass, a material patented nearly 20 years ago when we pioneered the fiberglass windows and door category. Integrity and Infinity windows have has led the category ever since with a commitment to a product that is tough, smart, long lasting, and worry-free.
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The company was founded in 1912 by George G. Marvin and was soon re-named Marvin Lumber & Cedar Company.
Marvin Windows and Doors is based in Minnesota, although they do ship and do business in all states in the U.S.A. They also have a large international business, offering their products in a number of different companies.