Integrity Windows

Integrity Windows

Built to Perform®

  • Virtually maintenance-free Ultrex® Fiberglass exterior, real wood interior
  • Unmatched Durability and longevity
  • Outperforms and Outlasts vinyl and roll-form aluminum

Integrity windows and doors are made with Ultrex pultruded fiberglass, a material developed 20 years ago that is eight times stronger than vinyl and three times stronger than wood/vinyl composites. Integrity has led the category ever since with a commitment to a product that is tough, long lasting, and worry-free.

Ultrex is quite possibly the perfect building material for windows and doors. The facts prove it. Ultrex fiberglass is durable, low-maintenance, and energy efficient. Stronger than strong, Integrity windows outperform roll-form aluminum, vinyl, and vinyl/wood composites in virtually every measurable category. While other windows might bow, break or chalk over time, Integrity windows undergo a patented, high-performance coating process, resulting in windows that perform under great stress without showing age or wear.  

The Integrity product line is from Marvin, a company with a rich history of craftsmanship, knowledge and dedication dating back to 1912.

See the beautiful combination of strength and efficiency at Integrity >>

Product Line

Casement & Awning
Double Hung
Bay & Bow
Round Top
Single Hung


Integrity Fiberglass Ultrex Casement Window
Integrity Fiberglass Wood Ultrex Bay Window
Integrity Fiberglass Ultrex Glider Window
Integrity Fiberglass Ultrex Double Hung Window