Integrity® Windows and Doors. Because Strong is Beautiful.

Get our Integrity Homeowner’s Guide for everything you need to know about Integrity from Marvin®.

The Integrity line of windows and doors was born from The Marvin Companies’ century-long heritage of service, craftsmanship and quality, with a focus on all-out performance.  Today, Integrity products are the most innovative fiberglass windows and doors on the market, and they’re backed by incomparable value.

What Makes Integrity Different?

The difference is in what Integrity is made of. Only Integrity windows and doors are made with Marvin’s exclusive, patented Ultrex® fiberglass, and they’re made with the same process used to make things like bridges and guardrails. The results of this amazing strength are windows and doors that outlast and outperform vinyl, roll-form aluminum, and other fiberglass composites.

What Are the Benefits of Integrity Ultrex?

•  Strength – 8x stronger than vinyl and 3x stronger than vinyl/wood composites 

•  Durability – Doesn’t rot, leak, or corrode and resists expanding and contracting. Plus, the Impact Line of Integrity is Impact Zone 3 (IZ3) rated

•  Performance – Ultrex expands at virtually the same rate as glass, keeping your windows tight

•  Energy efficiency – Meets or exceeds ENERGY STAR® guidelines

•  Superior Finish – Doesn’t fade, crack, scratch, or chalk

Have questions?

Contact us today to talk with an Integrity professional.

The more you learn about Integrity, the more you’ll realize they’re the perfect window and door solution for your home. 

Integrity WindowsIntegrity Doors

There is no one more qualified to ensure that you get the right Integrity windows and Integrity doors for your home than us, your local, independent dealer. We’ll help simplify the process and make it as worry-free as possible, assuring that you get the perfect windows and doors that will look beautiful today and for years to come.


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The Marvin Family of brands is dedicated to creating products that make the places where we work more meaningful by developing high-quality products built on a foundation of heritage, values, innovation and craftsmanship.

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