Square Industrial Exhaust Fan 1,Size:8"~24" 2,Power:28W~380W 3,Air volume:15.3dB[A]~153.3dB[A] Square Industrial Exhaust FanFeatures:1,The electrical motor is uesd stamped shell and low noise roller bearing,safety operation and prolonged service life.2,The structure component is stamped by high quality steel sheet,stiffness well,weight light,appearance elegant and installation favorable.3,The ...