DESC: A professional look. A sensible choice. Designed to fit perfectly beneath kitchen cabinets. Durable, heavy-gauge steel construction. Two bright, 50-watt halogen lamps for multi-level cooktop lighting (lamps not included). Two 175-watt infrared food warming lamps keep side dishes warm (lamps not included). Exclusive Heat Sentry automatically turns blower to high speed when high heat is detected. Infinite-speed control with blower memory "remembers" last setting used. Optional backsplash is recommended when using infrared heat lamps. Designed to duct out of the hood shell in either horizontal or vertical direction with interior blowers. A blower of your choice must be purchased separately for all 64000 series models. For an interior blower, use P5 (500 CFM), or P8 (900 CFM). For exterior blowers, use 331H (600 CFM), 332H (900 CFM), 335 (1200 CFM), or 336 (1500 CFM).