Seal Tite LLC manufactures prefabricated galvanized duct, pipe, and fittings for air distribution, continuing a trade name first used by the Peck-Williamson Heating Co. sheet metal shop in 1900. The company describes more than 125 years of Seal-Tite history and presents its products as designed for conditioned-air distribution, with production locations identified in Hillsboro, Ohio, and Lebanon, Pennsylvania.
Hennemuth Metal FabricatorsHennemuth Metal Fabricators is a family-owned and operated ductwork manufacturer and distributor founded in 1954 by Gordon Hennemuth. Based in Oakdale, Pennsylvania, the company fabricates custom duct and fittings for commercial and residential HVAC contractors, with in-house spiral and rectangular duct production. Its 60,000-square-foot fabrication shop opened in 2018, and the business reports more than 100 years of combined staff experience.OAKDALE, PA
The Ductworks IncBased in the Pittsburgh area, The Ductworks Inc. fabricates custom rectangular galvanized-steel ductwork and fittings for light commercial and residential HVAC systems. The shop works with HVAC contractors from blueprint takeoffs through job-site delivery, hand-crafting duct to reduce noise and friction while improving airflow and limiting leaks. Its experienced team also supports residential changeouts with custom plenums and boots.MONROEVILLE, PA
Southwark Metal Manufacturing CoFounded in 1946, Southwark Metal Manufacturing is a third-generation family-owned company that makes sheet-metal ductwork for residential and light-commercial HVAC systems. It operates seven U.S. facilities and describes itself as one of the largest manufacturers in this specialty, with more than 3,000 stock items and custom fittings produced for wholesale distributors.PHILADELPHIA, PA
Lukjan Metal ProductsLukjan Metal Products is a family-owned and operated manufacturer of sheet metal products for the wholesale HVAC industry, founded in Conneaut, Ohio, in 1964. Under the leadership of the founders’ son and daughter, it has expanded to four facilities in Ohio, North Carolina, Wisconsin, and Nebraska, with its named facilities collectively providing more than 700,000 square feet of manufacturing capacity. The company is particularly known for prefabricated sheet metal fittings and serves HVAC distributors across regional markets.CONNEAUT, OH