Aluminium Flexible Ducting Hose.

Flexible ducting hose - double layer aluminum duct hose is a two-ply aluminum foil clamped into spring steel wire air duct hose that is recommended for exhaust air ventilation, air-cooling, heating, and ventilation system such as range hoods, water heaters, laundries, dryer vents, etc. This double-layer aluminum foil air duct hose is extremely highly flexible, axially compressible, and small bending radius, also has very good low-temperature flexibility, and is kink-proof.