ENERGY SAVING: Under cabinet range hood 30 inch are using brushless DC motor technology which through tests, the AC asynchronous motor needs 180W of input power at the same air volume, while the DC motor only needs 80W. Save electricity and energy consumption to a large extent. Ductless range hood (Come with charcoal filter, model: CC170, Asin: B08GZD4JN4) brings fresh air to your kitchen and makes your kitchen no longer dull. ULTRA QUIET OPERATION: Slim stove vent using a brushless motor has almost no noise at the lowest gear, 300 CFM airflow will quickly ventilate your kitchen and keep the noise level below 45 dB. 2 EXHAUST OPTIONS: Stainless steel range hood has Vertical and horizontal exhaust option, you can connect the ductwork to the top or rear of the range hood. Vent location is on the top with 4.7 In.