
Kooltherm Duct Insulation
Thin and efficient high performance duct insulation© 2026 Kingspan Holdings (IRL) Limited, All Rights Reserved
Therma Duct Insulation
High performance duct insulationKoolDuct Plenum Boxes
Pre-insulated boxes for use with the KoolDuct System or sheet metal systems

Designed for mechanical ventilation, heating and air-conditioning systems, The Kingspan KoolDuct System is suitable for both new build and refurbishment projects in the residential, commercial, public, light industrial and leisure sectors. Moreover, it is especially suitable for use in nonferrous applications such as MRI scanning units in hospitals, and on other high specification projects where non-fibrous insulants may be preferred.
Product Highlights
Ideal for projects where existing building structures have insufficient load capacities for new service loads
Low weight ductwork fabricated in sections up to 2.95 m long allows for single–fix, quick installation
No need to install insulation as a second operation reduces project scheduling periods for insulated ductwork
Space required for a separate layer of insulation is eliminated, allowing ductwork to be installed flush to surfaces
Reduced labour and materials, including fixings, can provide a cost-savings without compromising performance