East Coast Millwork Distributors, also known as ECMD, offers a range of building products through its subsidiaries. Founded in 1982, it serves builders and architects. The company operates Crown Heritage Stair Company, which manufactures wood and wrought iron stair systems. Its A&H Windows is a certified distributor of fiberglass doors from Therma-Tru and also operates a more than 140,000-square-foot plant in North Carolina. The company sells columns, vinyl railings and glass block windows through Arndt & Herman Building Products. East Coast Millwork Distributors additionally operates ECMD Distribution, which provides supply chain management, retail merchandising and support solutions. Its EastCoast Mouldings features computer-assisted saws and finger jointing and tenoning equipment.