Roof ventilator, turbo ventilator, roof exhaust fan, industrial roof exhaust fan

Character:
*zinc of steel:180g/m2,
stong rust resistant capobility, long severce life

*multi-angle turbine
*turbine can be altered, This kind of turbine can be installed on many kind of roof , easy to operate.

* double bearing
*with fireprollf nylon engineering plastic outside the bearing,
*this kind of complete insulating motivates system can ensure ventilator work more smoothly and efficiently.