... (insulated duct,air duct,A/C vent duct, ducting pipe) Fibre Glass Insulated Material (insulated duct,air duct,A/C vent duct ... , ducting pipe)ISOFLEX insulated flexible air ducts are specifically produced for ... and medium pressure heating, cooling, ventilation, exhaust and air conditioning systems.ISOFLEX are produced from multi layer aluminium, ...