Material: inner PVC membrane + thick steel wire + double-layer aluminium foil under the waterproof PVC layer, 2-layer air hose with a layer of steel wire. The steel wire has a short distance, strong elasticity and does not deform so easily that the ventilation system is not torn or pierced.
Size: 200 mm diameter, 3 m long
Temperature: -30 C / + 150 C
Wide applications: kitchens, bathrooms, greenhouses, grow rooms, grow tents, etc.
Fireproof coating: flexible ventilation duct made of high-quality flame retardant aluminium and built-in corrosion-resistant wire coil for reinforcement and long-lasting performance