... range of fully flexible uninsulated aluminum/polyester/aluminum laminated with an encapsulated high tensile steel wire helix,which ... for range hoods,laundries,dryer vent,toilets, bathrooms use with heating, ventilation and air conditioning systemsTechnical data (Xuanyuan ... - 600mmAvailable Lengths5m,6m,7.5m,10mPackingPaper carton box with Polyethylene bag insideDiameter of Duct (mm)Steel wire thickness ...