Product Introduction Of The Silicone Fiberglass Aluminum Flexible Duct Our Aluminum Flexible Duct is constructed using aluminum foil, PET, Silicone fiberglass cloth and steel vents our product from corrosion and metal fatigue. Our aluminum flexible duct is with high degree of flexibility, which allows it to be easily connected to any desired position, especially where pre-cast ducts would be difficult and costly to be installed Aluminum flexible duct can be pulled open, compressed, bent and re-bent without any leakage. Further, these results in not being dry rot when heat aged. This ensures convenient shipping and handling. Product Parameter Of The Aluminum Flexible Duct products Aluminum Flexible Duct PROPERTIES VALUE DIAMETER RANGE 80 610mm (3ã 24ã) TEMPERATURE RANGE -30 +250 C VELOCITY OF AIR FLOW (MAX.) 30 m/s WORKING PRESSURE 2500 Pa/3000 Pa BENDING RADIUS 0.54*D STANDARD LENGTH 5-10m