DWT roof exhauste fan roof exhaust fan Features: 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)3285033001810.37664145057001760.5567596070001130.37636720150002321.57375609300830.55598960270001752.2729720320001262.27310560280001111.56911.27205250013837712720570001965.5731448069000159469DWT-II(centrifugal fan)Model no.r/minm3/hPaKwdB(A)314508782200.75573.5145013952991.1594145018874121.1624.5145029664951.163514504.686152.264696050243851.56579608015548368872012531393468107202215010727.572