Bath fan BPT20-01CL 1.70CFM and 100CFM. 2.Longlife ball bearing motor. 3.Quiet and high quality. ... /h, 2.5sones, 57db,4"Duct,Power:28W1).70CFM and 100CFM.2).Longlife ball bearing motor.3).Quiet and high quality ... :voltage&frequency:120V,60Hz,220V/230V,50Hz,CFM:50CFM and 100CFM(118m3/h and 175m3/h),suitable for 65-125Sq.Ft ...