XtremepowerUS 4" Inline Duct Fan 260 CFM Air flow: 260cfm Speed: 2500rpm Frequency: 60Hz watt:68w Quiet fan with decibel Rating at 52 dB It is an energy efficient way help circulate heated or cooled air around a room This duct booster fan is designed to be installed in almost any position in your home or office duct work Net weight: 6.6lbs