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.