cross flow fan Features: 1 New design,adopting multi-wing impeller. 2 Low noise,large input air,high wind-pressure. 3 smart, light and long life. 4 convenience to load and discharge,safety Technical performance: 1 Transmission speed:1100±100rpm 2 Noise:≤47db(A) 3 Blast volume:6±0.5m3/min Technical data: 1 Voltage: AC220V,AC100V,50/60HZ 2 Impeller size:Diameter 91X325mm 3 Air put size43X330mm 4 Power:25W 5 Dimension:425X152X135mm