American Duct Systems specializes in sheet metal fabrication for commercial and residential duct systems built to SMACNA standards. Their services include duct, lined duct, grease duct, exhaust hoods, hail screens, line set covers, drain pans, flashings, roof curbs, and curb adaptors. They operate a fully automated coil line for straight duct manufacturing, an automated plasma cutting table for fitting fabrication, and utilize double wall vane maker technology. American Duct Systems works with custom sheet metal in materials such as galvanized steel, plain steel, stainless steel, paint grip, and aluminum, offering deliveries for their products.