The series of ventilators are made up of asynchronous motor operated by rotor single-phase capacitance or three-phase asynchronous motor,double-flange cylinderical body,net rack,and blades.Its features are large air volume,less vibration,low noise,steady operation ,etc.

This kind of fans is used in  the place where large ventilation is needed.It can also be used in buildings,factories etc to exchange and clear air.