AC Fans are cooling devices that are designed to produce a flow of air out of one side or end of the unit. The devices in this family are designed to be used with an alternating current. The characteristics are size/dimension, voltage rated, width, air flow, bearing type, and fan type. The size is rectangular from 103.4mm L x 90mm H to 1100mm L x 175mm H, round ranging from 108mm diameter to 925mm diameter, and square from 60mm L x 60mm H to 1070mm L to 1070mm H.