Every project is unique. There are many things to consider and seemingly endless decisions to be made. But complexity doesn’t mean your project has to be a difficult process. Not when you choose Marvin Windows and Doors. Most manufacturers make you create your plans around their windows and doors. We do just the opposite. Marvin gives you virtually unlimited design options. It’s this design flexibility that makes our windows and doors truly Built around you. We take pride in building windows and doors the right way. One at a time. Made to order. With unmatched quality down to the smallest details, as if we were building them for our own homes.

Integrity Windows and Doors was born from The Marvin Companies’ century-long heritage of service, craftsmanship, and quality with a focus on all-out performance. We’re proud to manufacture the most innovative fiberglass windows and doors on the market, backed by top-notch customer support and incomparable value.

We build windows and doors with Ultrex® pultruded fiberglass exteriors paired with either rich wood or Ultrex fiberglass interiors for a long lasting, virtually maintenance-free window and door solution. Every Integrity product is available with a wide variety of options to suit your home’s design, including energy-efficiency solutions for every climate. Every window and door is made specifically for your order and delivered to your local distributor in an industry-leading 10 days.

Our values and work ethic are forged by the communities where we’re proud to live and work. When you choose Integrity windows and doors, you support a small-town, family-owned and operated company with deep roots in the community; some Marvin employees are fourth-generation, following the family tradition. We share profits with our employees; we support our communities; we treat our dealers and customers fairly and with respect. That’s Integrity.