Lorenzi Lumber, 1600 Jefferson Ave, Washington, PA 15301, US

Founded in 1956 in the town of Eighty Four, Pa., where the original store continues to operate, 84 Lumber Company is one of the largest privately held building materials suppliers to professional contractors in the country with nearly 95 percent of its sales going to that market. Some the products the company offers include lumber, plywood, insulation, flooring, siding, drywall, roofing, doors, windows, garages and pole barns. With more than 500 locations nationwide, 84 Lumber Company employs 9,500-plus associates. Aside from building materials, 84 Lumber also provides a number of other services to contractors, including 84 Travel, a full-service travel agency, and 84 Homes, which offers a full line of floor plans and estimating services. 84 Lumber Company maintains a location in Eighty Four, Pa.