Founded in 1913, MacArthur Company manufacturers and distributes pipe insulation, as well as pipe insulation accessories, HVAC and roofing products. Company clients include the building industry, manufacturers, OEM and the contractor. It has offices in St. Paul and Duluth, Minn., Billings and Missoula, Mont., Sioux Falls, S.D., and Fargo, N.D. The company offers products such as adhesives, painted and coated metals, building insulation, commercial and residential roofing, duct and sheet metal connections, caulking and sealants, exhaust piping, fastening systems and fire protection products. High-temperature insulation, gaskets, cloths, roof hatches, smoke vents and skylights are also offered. The MacArthur Company is headquartered in St. Paul, Minn.