Koolfab is all about fabricating the Koolduct System. The KoolDuct System is an advanced and innovative ductwork system that provides pre–insulated (no onsite insulator work needed), space reducing, flush mounting, pre-fabricated ductwork for installation that takes a fraction of the time compared to traditional metal duct systems. With better energy efficiency, lower maintenance cost and faster installation, Koolduct is a simple choice for engineers, general contractors, HVAC contractors, installers, and building owners.