... Centrifugal fan and blower, external rotor axial fan,ventilation fan, Duct fan, shaded pole motor, external rotor fan motor,aluminum die casting ... enterprise. 2 Specifcation(1)Overview: The temperature of the motor is measured when the fan is under zero static pressure ... : Core length code4: P4 : Motor pole numbe, 2,4,6,8 poles3. Products Display4. Factory Production Display Dia72-180 fan blower motor