Huge round ac axial fan 220*60: 1.motor protection 2.high static pressure 3.low noise and long life 4.good quality Huge round ac axial fan 220*60:General Specifications: Frameplastic(UL94v-0)Impellerplastic(UL94v-0) Bearing typeDual Ball BearingLeadwireUL1007AWG#26 or Equivalent (+):Red(-):BlackMotorImpedance Protected and Reverse Polarity ProtectedCertificationISO9000, UL ,CE, RoHS, TUV Expected ...