Builders FirstSource Inc., a Dallas-based company with subsidiaries, is a major supplier of building materials, construction services, and manufactured components in the United States. The company specializes in providing topnotch lumber and lumber sheet goods, which are used in on-site house framing. Other products include engineered wood products, windows, and interior/exterior door units under the Synboard brand name. Builders FirstSource Inc. also offers software products that provide software solutions to retailers, manufacturers, distributors, and homebuilders. Moreover, it provides turn-key framing, shell construction, professional installation services, and design assistance. Specialty building products and services such as metals studs, insulation, roofings, hardware products, and cement are also available. The company was previously known as BSL Holdings Inc. and changed its name in October 1999. It was incorporated in 1998. Builders FirstSource Inc. supplies to professional homebuilders, sub-contractors, remodelers, and consumers in the United States.