Established in 1958 by Joseph Hardy, Eighty-four Lumber is a US firm that supplies building materials. It is the largest privately-held company of its kind in America. Headquartered close to Pittsburgh, the firm owns and operates more than 250 stores. As of 2015 it offers: components plants, door shops, installation centers and wood products shops in 30 states. The firm employs around 5,000 people.