Marvin Integrity Ultrex & Wood-Ultrex

Integrity's Story

The Integrity brand is Built to Perform®. Our products, made with Ultrex® pultruded fiberglass, feature the industry’s first and only AAMA verified 624-10 finish. Ultrex outperforms and outlasts vinyl, roll-form aluminum, and other composites. Superior material performance and unmatched fast, efficient delivery make Integrity windows and doors a great overall value.

“At Integrity from Marvin, we didn’t join the fiberglass window and door industry, we pioneered it. In 1994, Integrity was born from The Marvin Companies’ century-long heritage of service, craftsmanship, and quality with a focus on all-out performance.”

- Susan Marvin

Integrity windows and doors are made with Ultrex pultruded fiberglass, a material patented over 20 years ago when Integrity pioneered fiberglass windows and doors. Integrity has led the category ever since with a commitment to a product that is tough, smart, long lasting, and worry-free. Ultrex is durable, strong, stable, low-maintenance and efficient. 

Integrity windows and doors made with Ultrex pultruded fiberglass outperform roll-form aluminum, vinyl, and vinyl/wood composites in virtually every measurable category. While other windows might bend, break, or crack over time, Integrity windows hold strong and perform under great stress without showing age or wear.

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Exterior Finish

All Ultrex

Integrity All Ultrex products are made entirely of Ultrex protruded fiberglass, inside and out.

All Ultrex products come with a Stone White interior finish

Wood Ultrex

The Integrity Wood-Ultrex line offers you the strength and protection of an Ultrex window with the added benefit of a real wood interior. 

Wood-Ultrex interiors come in two finishes:

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