Variable speed for more venitlation options, Additional sizes can be specially ordered (minimums apply), Use for recirculating operation, White and black hoods also available in this size and series, Switchable light offers more convenience in your kitchen, Designed to match 18 inch wide cooking surfaces; also available in 20, 24, 30, and 36 inch widths, Provides thorough filtering to reduce odors, Solidly constructed for years of use