... ducting, aluminium flexible ducting, flexible duct, acoustic, insulated, combi ducting, flexible hose, aluminum flexible ducting, aluminium Aluminium Flexible ... products have been successfully tested for fire resistance. Combi DuctingApplication: Combi-Flex is a new range of fully flexible reinforced ... is no separation from the duct material. The Combi-Flex is covered with a tough co-polymer outer ...