Founded in 1956 and headquartered in Eighty Four, Pennsylvania, 84 Lumber Co. is the nation’s largest privately held supplier of building materials, manufactured components, and industry-leading services for residential and commercial construction. In 2026, the company celebrates its 70th anniversary, marking seven decades of serving customers, building communities, and delivering the American Dream nationwide. 84 Lumber operates 320 facilities in 34 states and provides turnkey installation services across a wide range of product categories.