Modern Builders Supply, founded in 1944, produces window and door systems through its Polaris Technologies division. Its brands include Polaris Dynatech and Polaris UltraWeld. The company also distributes products from other leading manufacturers, including roofing, siding, and accessories (Alcoa, Certainteed, Owens Corning); kitchen components (4B Wood Cabinets, Kraftmaid); entry and storm doors (Pease, Therma-Tru); and tools and equipment (QualCraft, Werner). The company manufactures and wholesales prefabricated structures, lumber and other building materials, structures and building and construction and manufacturing components and supplies. Modern Builders Supply is based in Toledo, Ohio.