Product : FB-9B-1 Fan ,elevator fanFeatures:1.New design,adopting multi-wing impeller2.Low noise,large input air,high-wind pressure3.Smart,light and long life4.convenience to load and discharge,safetyTechnical performance:1.Transmission speed:1200±100rpm2.Noise:≤45db(A)3.Blast volume 4.8±0.5m3/minTechnical data:1.Voltage:AC220V AC100V 50/60HZ2.Impeller size Diameter:91X266mm3.Air put size:43X270mm4.Power:25W5.Dimension:375X152X132mm