... flexible duct, flexible duct, foil, acoustic,combi ducting, flexible hose, aluminum flexible ducting, aluminium flexible ducting, flexible duct, acoustic, insulated, combi ducting, flexible hose, aluminum flexible ducting, aluminium Aluminium Flexible DuctingApplication ... co-polymer outer duct/vapour barrier, which acts as a unique extra airtight, strong and durable barrier.Advantages: Seamless ...