Lone Star Materials is a distribution center of GSM, which is also known as Gypsum Management and Supply. Founded in 1871, GSM is one of the largest independent distributors of drywall products in the United States. It operates in more than 25 U.S. states through a network of over 40 subsidiary companies and nearly 150 distribution centers. The company and its subsidiary companies distribute more than 10,000 unique products. GSM offers acoustical products, including wallboards, ceiling tiles, grids and panels used in commercial applications. The company also provides metal framing, insulation, ready-mixed joint compound and various other interior construction goods. GSM maintains a fleet of trucks for product deliveries.