Builders FirstSource, through its subsidiaries is a supplier and manufacturer of building materials, manufactured components and construction services to homebuilders, sub-contractors, remodelers and consumers. Co. provides a solution to its customers providing manufacturing, supply and installation of structural and related building products. Co.'s manufactured products include factory-built roof and floor trusses, and wall panels and stairs. Co. also assembles interior and exterior doors into pre-hung units. Additionally, Co. supplies its customers with building products not manufactured by Co., such as dimensional lumber and lumber sheet goods and various window, door and millwork lines.