Our Brands

Integrity Windows and Doors is part of the Marvin group of companies, a family of window and door brands offering best-in-class solutions to meet the needs of the residential, replacement and commercial markets.

Integrity Windows and Doors

Integrity Windows and Doors is the world's largest manufacturer of windows and doors made with Ultrex®—a highly-durable, virtually maintenance free state-of-the-art pultruded fiberglass material that outperforms vinyl, roll-form aluminum and composite materials.

Integrity offers a complete line of windows and doors that are Energy Star qualified. Choose from Integrity’s All Ultrex or Wood-Ultrex Series, featuring wood interiors and Ultrex exteriors.

Based in Fargo, North Dakota, Integrity products are Built to Perform and backed by first-class customer service.

Marvin Windows and Doors

Marvin Windows and Doors is a premier manufacturer of made-to-order wood windows.

Marvin’s low-maintenance, clad-wood products feature an extruded aluminum exterior and commercial-grade paint that resists fading and chalking.

The company's Built around you® philosophy enables Marvin to offer the industry's most extensive selection of shapes, styles, sizes and options, including custom divided lites, clad casings, specialty woods and designer door hardware.

Whether you’re creating something new or restoring something old, Marvin is known for its ability to meet architectural design and performance challenges with innovative, one-of-a-kind products and solutions.

Infinity Replacement Windows

Infinity Replacement Windows delivers the low maintenance and high performance that today’s discerning homeowners demand.

Infinity windows are made with Ultrex®, inside and out. This fiberglass material is durable, long lasting, low maintenance and energy-efficient. And Infinity is available with an EverWood® interior option that can be stained to match existing woodwork, yet is virtually maintenance free.

Infinity windows are available in custom sizes and configurations to meet the needs of any window replacement project.

Most importantly, Infinity windows are professionally installed by select window replacement experts, making your project simple and hassle free.