Founded 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.
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
MKT Metal ManufacturingMKT Metal Manufacturing has supplied sheet-metal ductwork and HVAC accessories since 2004, fabricating products at facilities in York, Pennsylvania, and Wilson, North Carolina. It describes itself as a true manufacturer and provides commercial and industrial ductwork, including custom fabrication, while coordinating directly with project and field personnel.YORK, PA
Southern Sheet Metal Works IncFounded in 1904 during Oklahoma’s oil boom, Southern Sheet Metal Works Inc. is a Tulsa-based, family-owned manufacturer of custom sheet-metal fabrications and HVAC ductwork. Now in its fifth generation of Tidwell family ownership, the company has grown from an early oil-field supplier into a custom manufacturer handling everything from prototypes to industrial ventilation systems. Its Southern Safe Rooms division, launched in 2011, builds Tulsa-fabricated storm shelters certified to withstand an EF5 tornado.HUGHESVILLE, MD
Allure Metal WorksAllure Metal Works is a family-owned and operated metal fabrication business serving Long Island, New York, where it manufactures HVAC ductwork and provides commercial duct installation. The company fabricates its own products and offers custom ductwork designed to meet customer requirements, with short lead times and competitive pricing.ISLANDIA, NY