Marvin is known throughout the country as a leader in custom windows and doors and in fact, “Marvin is the largest made-to-order wood window and door manufacturer in the world.” Unlike other window manufacturers, Marvin does not stockpile an inventory of completed products. Instead they build each order with their customer’s requirements specifically in mind. By doing things this way, Marvin can offer the industry’s most extensive selection of shapes, styles, colors, and overall options. As Marvin’s reputation for ethical business practices is second to none, different generations of the Marvin family are still actively involved in the day to day operation as they have been since the turn of the century. As customers needs have changed over the years, Marvin’s continued dedication to quality and innovation have never wavered.

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