Grace Composites Fiberglass Ductwork is designed specifically for each application. We also have standard specifications available for a wide variety of applications. Please feel free to contact us for technical information or quotes. We have the ability to manufacture complete duct systems including ductwork piping, ductwork fittings, hoods, dampers, and expansion joints. Our duct can be manufactured in round, oval, or square shapes from 2”-42” in diameter.