The Broan 884823 48 In. Under Cabinet Black Hood offers an elegant yet powerful and quiet approach to ventilation. The under cabinet range hood features an infinite speed slide control with blower memory feature that saves last setting. It installs as 3-1/4 in. x 10 in. ducted opening and ducts either vertically or horizontally or in a non-duct recirculation mode. The hood includes a super quiet dual centrifugal blower dual incandescent lighting convenient slide controls dual dishwasher safe grease filters.