... Air volume: 3,000 - 140,000m3/h Pressure:150- 600pa Roof Fan, Fan, Ventilator, Ventilation, Ventilating Fan, Ventilation, Ventilator Fan, Ventilation ... reliable operation.Application: To blow and exhaust air for the roof of large factory buildings suchas power plants, rubber factories, auto ... ³/h - 140,000 m³/h 3)Air pressure:150Pa - 600Pa. roof ventilator