3 speeds: 150-250 cfm, quiet 1.5 - 5.0 sones, LED lights, dishwasher safe filter, touch control, 4-WAY CONVERTIBLE INSTALLATION: Installs as 3.25" x 10" vertical or horizontal ducting with damper, 7" round vertical ducting (damper sold separately), or non-ducted with air recirculation (filter sold separately) to provide versatile installation