Specifications

roof ventilator,ventilation fan,ventilating fan,no energy,strong anti-corrosion,light weight,high quality,good exhaust capacity

Roof turbine ventilator operates utilising the slight energy of the wind, so it saves power cost.
It works without the electricity power,they can change our air condition indoors,leave us a comfortable environment.
The turbine always rotates in the same direction no matter of the wind strength or its direction.
It is to be mounted on gravitation based ventilation chimney duct endings.Roof turbine ventilator can exhaust the hot air, waste gas, dust and other harmful gas; meanwhile Beautify our living and surrounding.