Founded in 1918 and incorporated in 1919, O.C. Cluss Lumber is one of the major regional suppliers in the lumber and building materials industry in the United States. Based in Oakland, Md., the company offers a range of products, such as roofing/siding, windows, doors, moldings/millwork, tools/hardware, kitchen/bath and home decor. It provides installation of various products, which includes fireplaces, stone veneer, garage doors, copper roofs and vinyl railing. In 2010 Pro Sales magazine has listed O.C. Cluss Lumber as the No. 39 largest lumber and building material suppliers in the U.S.A. The firm serves the areas of Pennsylvania, Maryland and West Virginia.