Roof axial ventilator,Dia.300mm~1120mm. Volume:3300~53000m3/h, ... 37kw~5.5kw, Voltage:380V/440V contentRoof axial ventilator,axial fan:Dia.300mm~1120mm.Volume:3300~53000m3/h ... 5.5kw,Voltage:380V/440V/OtherCentrifugal Fan ordinary roof WT4-85-11 series uses and conditions of ... DbA noise indicators. Low noise centrifugal fan DW3 roof-88-11, DW4-75-11 series uses and ... -6YDW0.75(0.8)-60.8 Roof axial ventilator