... fan, backward fan,duct fan,tangetial fan,moterized impeller 12" In-line Fan .Applications-.General Ventilation;House,Conference Room ... Duct booster-.Hydroponicso.Moror-.Extermal motor-.Voltage / Frequency:115v-120 60hz,220v 50hz,220v 60hz-.Protection class of enclosure:IP44 ... .11.15Revolution :RPM24002503Air Volume: Max14861576Static Pressure6675Noise7071Weight :Kg6.86.8 12" Outer Rotor In-line Fan