Marvin windows and doors have the power to transform the spirit of a room. Each product is made-to-order, one at a time, to your exact specifications. With our customization options, exclusive features, high-performance energy efficiency innovations, and our unmatched personal service at every point in the process, you will be able to find the perfect windows and doors for your project. Made right here in Minnesota!
Integrity windows and doors are made with Ultrex®, a pultruded fiberglass we’ve patented that outperforms and outlasts vinyl, roll-form aluminum and other fiberglass composites. We use Ultrex and our proprietary pultrusion process to manufacture high-demand windows and doors that endure all elements without showing age or wear.