* model c6-48 dust exhausting centrifugal fan is a dust-exhausting special-purpose fan which has been jointly designed with the fan industry the series fan has the features such as uneasy to collect dust and fine wear-ability etc. it is applicable for exhausting gas containing dust. wooden scraps, fin and crushed fiber etc. (if there are hard particles in gas, a dust-collecting device should be installed in front of the fan). it can also be used as the common ventilation and air-exchange purposes.