600 CFM/65K BTU Threshold - Allows installation over any KitchenAid regular 36- or 30-inch range or cooktop, and some commercial-style cooking surfaces with outputs up to 65K BTU., Auto Speed Setting - Takes the guesswork out of protecting cabinets from steam, grease, and moisture by automatically adjusting fan speed to ventilation needs depending on the heat being produced., Halogen Night Lights - Enhances the style of the ventilation system by providing soft, accent lighting in the kitchen., 3-Speed Electronic Touch Control with Boost Function (10 Min.) - Provides electronic operation with visual feedback on settings and selections. Enhances performance when using high-temperature cooking techniques by providing a timed, short burst of high-s, Whisper Quiet® System @ 49 dBA (1.5 sones) at Low Speed - Ensures that the ventilation system operates at a quiet level so it can be used while entertaining. At maximum speed, sound level is 65 dBA (5.4 sones).