The Marvin Companies | Infinity Replacement Windows - Infinity from Marvin

The Marvin Family of Companies

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.

To learn more about Marvin window and door products, visit


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 and roll-form aluminum.

Integrity offers a complete line of standard-sized window and door options many of which 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.

To learn more about Integrity window and door products, visit


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.

Infinity windows are professionally installed by authorized window replacement installing retailers, making your project simple and hassle free.

Infinity Replacement Windows from Marvin

Infinity from Marvin

Since the late 1930’s Marvin has been creating window and door products of superior quality. Continuing in this tradition of innovation, Marvin created Infinity to provide high-quality, low-maintenance fiberglass replacement windows to discerning homeowners like you.

Installed for You

Infinity Reviews

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Environmental Impact


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