Integrity By Marvin 2017-02-10T19:36:55+00:00

Integrity by Marvin Windows and Doors are made with a virtually maintenance free, pultruded fiberglass material called Ultrex® Fiberglass. Ultrex® Fiberglass is 8x stronger than vinyl and is so durable and long lasting it is also used in bridge construction. Integrity products feature Ultrex® Fiberglass exteriors and your choice of wood or Ultrex® Fiberglass interiors. Integrity from Marvin is one of the top values for price and quality on the window market today.

Visit our showrooms or call 800-773-4803 for more information about ordering Integrity Windows and Doors.

Learn More About What Makes Marvin The Best Window Product Out There

Why Ultrex Fiberglass?

Ultrex is a patented pultruded fiberglass material pioneered by Marvin.

Ultrex is made by taking thin strands of strong glass cables and saturating them with specifically compounded resins. This material innovation was developed by Marvin and brings 20 years of unmatched experience, tooling and component optimization to every Integrity product.

Integrity’s Features and Options

Window Styles

Door Styles

Exterior & Interior Finishes

Divided Lite Options


Integrity offers glazing options, each can be used to maximize the energy efficiency of your project. Today’s standard glazing is LoEII with Argon and meets most project’s needs.

Warranty & Lead Time

Marvin products have a 20 year warranty on glass and a 10 year warranty on its other parts and pieces. Typical lead time is 14 days from time of order.

Integrity’s Inspiration Gallery

Use the arrows on the left and right side of the gallery to browse our Integrity images for inspiration and ideas on your next new construction, remodel or replacement project.