HVAC Premium 5'' Inch Aluminum Hose Flexible Air Duct Pipe for Rigid HVAC Flex Ductwork - 10' Feet 5 Inch - 10' Feet

5" Inch Aluminum Hose Flexible Air Duct Pipe for Rigid HVAC Flex Ductowrk - 10' Feet LongThis Aluminum Flex Duct is intended to be used in heating, cooling, ventilation and waste gases transmission lines. Suitable for medium pressure application. It has an outer surface made of High Quality Aluminum Foil and an inner surface made of Metalized PET with inside high-tensile spring steel wire. Great emphasis has been invested in the design of this product to prevent it from kinking in sharp bends & turns, and to hold steady and at full diameter in all applications. All steel wire are applied between PET surfaces to prevent corrosion (oxidization). Produced in accordance with ISO 9001 - 2008 Quality Management System. Complies with industry standards of USA: ASTM D-882. European: EN 10270-1-SM. & EN 13180 standards. By means of the smooth surface provided by the interior PET, this flex duct reduces pressure loss and promotes efficient airflow.