... We can customerize the bower form 80mm -220mm centrifugal blower:1.Voltage:,220V/50Hz,380V/50Hz;2.Power:, ... ,5m3/min,5.Static6.Type:,external rotor 1.Centrifugal fan from 140mm to 710mm.We can supply ... and frequency with 50/60 Hz.4.This centrifugal fan for air condition with external rotor motor ... We have both the forward and the backward curved centrifugal fan . 1.product performance 2, produce process ...