Southern Duct Manufacturing, a Commercial Duct Fabricator servicing Florida and neighboring states. Southern Duct Manufacturing (SDM) out of an automated 25,000 square-foot facility with a fully equipped sheet metal shop and welding department. We can product spiral and rectangular ductwork in various gauges and materials to meet your needs. We are prepared to do custom fabrication to meet your specifications and needs. In addition to our custom sheet metal shop, we are a licensed Carrier parts and product distributor, and we maintain an extensive inventory on hand for emergency repairs, upgrades, and maintenance.