exhaust fan air blower ventilator industrial fan DWT roof exhauste fan exhaust fanFeatures: light ,low noise,big flow volume,atable operation,corrosion resistant.Specification:DWT serise is devided into DWT-I,DWT-II,DWT-III.Widely used in power plant,rubber factory,car factory,motor factoy,textile factory,ect.DWT-I(axial flow fan) Model no.r/minm3/hPaKwdB(A)3285033001810.37664145057001760. ...