Founded in 1921, and located in Glen Carbon, IL, MPM Industries (formerly Mechanics Planing Mill) is a leader in the construction materials supply industry. MPM serves Architectural Divisions 6, 8, 10 and 12. The company has been a distributor of hollow metal doors and frames, architectural wood doors, and architectural hardware since 1960. MPM also specializes in architectural casework and architectural millwork. In 2019, MPM expanded into specialty products ranging including, but not limited to, shades, bathroom accessories, lockers, and white boards.