air coolers blower ventilation fan exhuast fan

Thisi is our Centrifugal Shutter System Exhaust Fan.The exhaust fan has many advantages:
1) Adopt the this system which open and close automatically when the fan works.
2)Centrifugal shutter system and other fitting of shutter made of Nylon, high quality engineering plastics, 100% raw material, high strength, and long service life.
3) The inner steel fitting install in the flange, increasing the security, avoid the stretching change when Nylon system operates.
Blade:
4) Adopt the injection molded Stainless steel blade, no broken, no distortion, aesthetic and durable.
5)Balance running machinery checked the entire fan bladeý­s balance; ensure operating steady, low noise, long service life.
6) Adopt the handle as new inset design from our engineer, easy for carry, transport and installation. Also has no affect on the appearance.
7) It made of high quantity aluminum-magnesium alloy, light weight, high strength.
8) We could supply V-belt as the type A or type B, upon the varieties demand of different customers.
9) The high efficient and energy-saving motor passed the national CCC certification. Also protection class: IP55, insulation class: F grade.
we also produce swung drop hammer exhaust fan ,centrifugal shutter system exhaust fan,double shutter type exhaust fan,cone fans,hanging exhaust fan ( cow house exhaust fan.) and air circulation fans,Welcome you to our Web:http://www.wfsanhe.com. My e-mail:[email protected]