Z Line GL14i-36 760 CFM Island Mount Range Hood, 36" Vent out or recirculating (ductless) option with carbon filters (not included) Easy-to-use push button controls let's you easily control fan speed and lighting 4-Speed Fan Control (280/400/580/760 CFM) let's you choose the appropriate air flow for your cooking situation 760 CFM Air Flow (highest speed setting) efficiently moves large amounts of air away from your cooking area while maintaining a relatively quiet environment (52 decibals) Ductwork easily connects to the top of the range hood