National Gypsum is a leading manufacturer of gypsum board and related products in the United States. Founded in 1925, the company specializes in producing high-quality building materials, including drywall, cement board, and acoustical ceiling tiles. Their products are widely used in residential and commercial construction projects. The company operates several manufacturing facilities across the country and is known for its commitment to sustainability and innovation. National Gypsum's products are designed to meet various building codes and standards, making them a reliable choice for contractors and builders in the construction industry.