1. set the motor2. the mesh front and rear3. rotor4. switch the control to work.5. the fan motor holder is responsible for infrastructure and equipment of the machine. Exhaust fan is mostly used in houses have air conditioning. To the pure no ventilation in the room out of the room. Reduce dust is confused. The component is similar to the motor rotor is similar to the common fan, there is a different section: 1. convert the fins. 2. adjust the air direction switches.
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