air-flow 2,000-1200,000m3/h pressure:300-1650pa power:3.5-15kw speed:850-3200rpm aluminium impeller,blade,ventilation fan impeller,centrifugal fan impellermaterial:cast aluminiumair-flow:2,000-120,000m3/hpressure:300-1650papower:3.5-15kwspeed:850-3200rpm Aluminium impeller for centrifugal fan