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ABC Supply is one of the largest wholesale distributors of exterior building products in the United States. The company operates more than 350 centers in over 45 U.S. states. ABC Supply stocks more than 6,000 items and maintains a staff of over 5,800 associates. It provides products and services to builders and remodeling contractors who specialize in roofing, siding, windows and exterior building products. The company features products from various manufacturers, including American Slate Company, Charleston Metal Works, GAF Materials Corporation, Owens Corning, TAMKO Building Products and Entegra Tile Products. It offers residential and commercial building materials, cedar and sheet shingles, metal products and accessories, concrete roof tiles, railing systems and synthetic slates. In addition, the company operates a fleet of more than 4,500 vehicles that provides on-time delivery services. ABC Supply has been operational for more than 25 years and maintains a location in Madison, Wis.

ABC Supply Co., Inc. is the nation's largest wholesale distributor of roofing, and one of the largest distributors of siding, windows and other exterior building products.