Favourite Roof Ventilator Range Hood Exhaust Fan Outlet Unpowered Roof Ventilator (Size : 200mm*300mm*240mm)

Product name: Stainless steel unpowered hoodProduct material: 304 stainless steelProduct size: 110mm*150mm*180mm, 160mm*220mm*200mm, 200mm*300mm*240mmProduct principle: It uses natural wind and air thermal convection caused by the temperature difference between indoor and outdoor to push the turbine to rotate, thereby using centrifugal force and negative pressure effect to disarge stale indoor air.Product functions: zero energy consumption, no rust, no leakage, high precision, high speed, rainproof, efficient exhaustScope of use: industrial plants, farms, residences, large factories, warehouses, sports venues, animal farms, high-rise buildings, greenhouses, residential buildings, covered terraces, wet rooms and closed or rarely used rooms or spaces, providing full The sky is ventilated.

• The unpowered hood is newly upgraded, with a stronger load-bearing capacity and is not easily deformed. It is made of imported special bearings and high-temperature quening.
• It is power-free and maintenance-free, and does not require electricity to automatically exhaust air throughout the day. It will also reduce fires and a lot of other unnecessary troubles caused by wire short circuits or voltage overloads, and it will move when the wind blows.
• Noiseless and sturdy, the fan has no noise when running, and the core of the fan uses fully sealed bearings. The blade bases are all stamped and formed from stainless steel plates, whi are anti-, acid and alkali resistant, anti-aging, and have a service life of more than 20 years.
• Thickened stainless steel, 304 thickened stainless steel, high density and long service life.
• The product principle uses the temperature difference between indoor and outdoor to cause air convection to push the turbine to rotate, thereby using the negative pressure effect of centrifugal force to disarge stale indoor air.