Name:WEX sidewall axial exhaust fan / WSP sidewall axial supply fan Application: industrial plant sidewall exhaust / supply Volume range: 400 ~ 29000 m3/h Static pressure range: 40 ~ 300Pa Product feature: Forward sweeping blades: cut into air progressively, high efficiency, low noise Wheel balancing level G2.5 Square housing, easily mounted Direct drive, no easily damaged parts, no maintenance need Elegant appearance matched with the modern architectural design