Home | News & Press

WindowPRO Product Lines

Integrity Windows
& Doors

Integrity windowsIntegrity Windows and Doors is a division of Marvin Windows. Integrity is the world's largest manufacturer of windows and doors made with Ultrex® – a highly-durable, virtually maintenance free state-of-the-art pultruded glass fiber material that virtually outperforms all other window materials including vinyl, wood vinyl composites and roll-form aluminum.

Integrity windows by MarvinIntegrity offers a complete line of standard-sized window and door options that are Energy Star qualified. Choose from Integrity's All-Ultrex or Wood-Ultrex series, featuring wood interiors and Ultrex exteriors.

While Integrity products can be used for remodeling and replacement, they are mostly used in new construction applications.

Integrity Windows and Doors are only found at specialty window and door retailers like WindowPRO. You will never find any Integrity products in a "big box" store.

Based in Fargo, North Dakota- Integrity products are Built To Perform™ and backed by Marvin.

Click here for more information on Integrity Windows and Doors products for new construction projects.

Learn More About the Marvin Family of Products
featured by WindowPRO*

Schedule an Appointment

Enter your zip code in the box below to find out if WindowPRO provides service in your area.

From Our Customers

"Your salesperson focused a great deal on his commitment to be there for us before, during and after the installation. The fact that he even mentioned "after the installation" was impressive."

Jon & Terri H., Rocky River
View All