CRT provides the ability to meet codes and reduce airflow to 300 CFM, Install the hood so that the bottom of the unit is 24" to 30" above the cooking surface, mounting height may be affect by ceiling height, Tap-touch, three-speed capacitive control features a smooth, easy-to-clean surface, Bright 2-level LED module included, 10 minute delay-off function keeps hood running after cooking to ensure smoke and odors have cleared the environment, The elegant curved glass design this range hood provides a stunning focal point for any kitchen. Quiet operation and bright LED lighting enhances your cooking experience. While the sleek 3-speed capacitive touch control makes operation and clean up easy., Dishwasher-safe deluxe filters feature quick-release latch for easy removal, Optional non-duct kit, filter included, available for indoor exhaust recirculation (Model ARKEW46, purchase separately). Non-duct replacement filters are sold separately (S99010475)