The Kingspan KoolDuct System is an innovative pre-insulated ductwork system. It was the first phenolic HVAC Ductwork system in the world to be UL 181 listed – standard for Factory – Made Air Ducts. The System can reduce air–leakage rates to a fraction of those typical of rectangular sheet metal ductwork. This cutting edge System thus offers the triple benefits of cutting energy use, cutting operational carbon dioxide (CO2) emissions and cutting costs.

Product Highlights

  • UL 181 Listed as a Class 1 Air Duct, to Standard for Safety UL 181 (Factory Made Air Ducts & Air Connectors)
  • Ideal for projects where existing building structures have insufficient load capacities for new service loads
  • Low weight fabricated ductwork, quick installation
  • Reduced labour and materials, including fixings, can provide a cost-savings without compromising performance
  • Low air-leakage
  • Part of our Kooltherm range of advanced insulation

Technical Information


  • Indoor & Outdoor

Product Thickness

  • 20 & 30 mm


  • Length 3930 mm
  • Width 1200 mm


  • 55 kg/m3