Koopman Lumber Featured Brands: Marvin Windows and Doors

HANDCRAFTED IN AMERICA SINCE 1904


What began as a family company built on an old-fashioned code of honesty, hard work, and service to their neighbors is now one of the world’s premier window and door companies. For everything from new construction to remodeling and replacements, to commercial building and even historical restorations, Marvin never takes shortcuts, and we always adhere to the highest possible standards and the highest levels of service. We stand behind every one of our products, every step of the way.

We make it our priority to be a partner to our customers through every step of the process, and go above and beyond what is expected. That includes making sure our products continue to live up to our high standards every single day.