Koopman Lumber Featured Brands: Therma-Tru Doors

Therma-Tru Doors first created the fiberglass entry door category 25 years ago with the introduction of Fiber-Classic® wood-grained doors. Today, they are the nation's leading manufacturer of fiberglass and steel exterior door systems, and they are the most preferred brand of entry doors by builders and remodelers. Therma-Tru Doors has been revolutionizing the home improvement industry with innovations and technologies in door systems. they've been improving millions of homes across the country with original door styles such as the wood-grain lines of Classic-Craft® Oak, Mahogany, Rustic and American Style Collections™, Fiber-Classic® and Smooth-Star® fiberglass doors, and patio door selections.