... 1.mirror designed Stainless steel balde,with big air volume,never distortion and broken, the angle of ... motors are single or 3 phase,with permanent split capacitor,2,4 or 6 poles.The voltage ... and without. Suitable for condensing units for air-conditioning and refrigeration,evaporators,exhaust fans,air heaters.The insulation class of ... have passed CE AND IS09001 CERTIFICATE wall mounted ventilating fan