Marvin Windows

For more than a century, Marvin has been quietly redefining what windows and doors can bring to a home. Founded in 1912 in Warroad, Minnesota, the family-run company began by crafting high-quality wood components and soon shifted its focus to making-to-order windows and doors, built around people and possibilities.

Marvin’s philosophy centres on design for how people actually live: connecting interior and exterior, optimizing natural light and fresh air, and delivering durable materials that perform over time. From its Ultrex® fiberglass innovations to its customization capabilities, Marvin blends craftsmanship, innovation, and performance into a unified offering.

Tri-Supply partners with Marvin because our customers deserve more than standard openings—they deserve elements of the home that shape space, view, and comfort. With Marvin, you benefit from custom sizing, high-performance glazing, and an expansive palette of finishes—all backed by a brand deeply committed to long-term quality. Visit a Tri-Supply Showroom to explore the Marvin range in person, review finish and glass options, and talk with one of our window & door specialists about how Marvin can elevate your next project.