SUPAFLEX® is a very strong fully flexible, compressible light weight duct which is widely used in Air Conditioning and Ventilation Systems for Commercial, Industrial and Residential applications. SUPAFLEX® is extremely durable and will maintain dimensional stability when fully extended. Highly efficient when correctly installed, SUPAFLEX® provides a maintenance free service life under normal operating conditions.Attention is drawn to the requirement that flexible duct must always be fully extended and bends made with adequate radius to prevent corrugation of the interior with consequent excessive resistance to airflow.Comply with Ul 181 part 14Certified to BS 476 parts 5,6 & 7Tear and puncture resistant construction..Ideal for all HVAC Systems including Hospitals, Hotels,Commercial, office, Industrial and Residential BuildingsAvailable bare or pre-insulated with fiberglass insulation.Highly resistant to corrosion and micro organisms.Zero Ozone Depleting Potential (ODPUnder License from SUPAFLEX® Trade Mark Owners