Broan 40000 series 42" under cabinet hood. This hood installs as 3-1/4 in. x 10 in. ducted opening only and ducts either vertically or horizontally. The hood features a fan designed for years of trouble free service, an easy to clean grease filter, a protective lamp lens that distributes light evenly over the cook-top and control switches for fan speed and light activation. Includes duct adapter with built-in damper.