... Product Description AC centrifugal fan,Centrifugal fan,Exhaust fan,Duct fan,Ventilation fan,Draught fan,Exhaust blower,Draft fan,small fan:DC fan:Capacity:290m3/h~ ... period It is widely accepted in cleaning enterprises. DC Fan Impeller: from 180mm to 400mm; Air flow: from 200- ... is available.Air flow ranges from 580to 22000CMH.Compressor Fan -Impeller diameter: 400mm,450mm,500mm,560mm,630mm,710mm,800mm ...