HIGH-QUALITY MATERIAL: Four-layer structure, constructed of fireproof aluminum foil and tear-resistant thermoplastic, with a high-temperature resistant range from -22 to 266° F. Built-in steel wire for durable use and long-lasting
AIR DUCT SIZE: 4" in diameter, can be extended the length up to 25 Feet, please check the duct size before purchasing
FLEXIBLE SPIRAL DESIGN: This aluminum ducting is flexible enough to stretch and shrink to different lengths freely, also you can bend the aluminum ducting in any direction to adapt to the rugged places
EASY INSTALLATION: Comes with two clamps which are corrosion-resistant and stainless, just use the screwdriver to fix the clamps secure the connection of the hose and duct opening
WIDELY APPLICATION: The aluminum ducting can be used for HVAC ventilation and exhaust of family exhaust fan, dryer, greenhouse, grow rooms & tents