Integrity Windows          

Integrity windows and doors are made with Ultrex®, a protruded, patented fiberglass that competes favorably with vinyl, roll-form aluminum and other fiberglass composites. Marvin uses Ultrex and their proprietary pultrusion process to manufacture high-demand windows and doors that endure all elements without showing age or wear.

Durable doesn’t begin to describe how tough Ultrex is. Strong, stable and virtually indestructible. Ultrex is one of the leading products in residential building materials, creating windows and doors to upgrade any home or multi-family complexes. Low maintenance and high durability! Everything you want your home to be, and everything that Ultrex delivers.

Find the Perfect Window or Door

Integrity’s windows and doors are made with Ultrex Fiberglass, an innovative material created over 20 years ago. For two decades now, Ultrex has outlasted and outperformed the competition on virtually every measurable scale.

Wood-Ultrex Windows and Doors

With a strong Ultrex Fiberglass exterior paired with a rich wood interior, our Wood-Ultrex has both strength and beauty.

All Ultrex Windows and Doors

Constructed with Ultrex from the inside out, our All Ultrex offers outstanding strength and durability.