Shenzhen NuoRui Hose Co., Ltd. [China]

Aluminum foil, 150 degree, very cheap. very light.

Material: Aluminum foil This type of duct is made of reinforced aluminum foil coating.  The inner part is filled with highly tensile spiral steel wires to support the duct.  It is generally applied on low to medium air velocity with temperature variantion system.  This product has passed GB8624B1 fire resistant test.  Maximum velocity rate: 28M/S    Temperature range:-20°C~150°C  

Maximum pressure resistant rate:250mmWG

foil ventilation hose