Zephyr AK7748BS is the 48-inch Titan Island stainless-steel range hood for a ducted indoor kitchen island installation. Zephyr specifies an included 750-CFM PowerWave blower; an optional PBD-1300B dual-blower upgrade is sold separately and can provide up to 1,300 CFM. The manufacturer lists electronic LCD controls, Airflow Control Technology (ACT) settings at 590, 390 or 290 CFM for the included blower, professional baffle filters, four LumiLight LEDs and a grease collection tray. It is not designed for recirculation. Confirm vertical duct dimensions, ceiling clearance and installation requirements for this exact model.