Requires separate purchase of a non-ducted kit for indoor exhaust recirculation, For use with electric cooktops and gas ranges to 45,000 BTUs, Two 1-level LED modules are included to provide bright cooktop lighting., Dishwasher-safe aluminum filter features a quick-release latch and professional style appearance, Ducted/non-ducted telescopic flue accommodates ceiling heights from 8 to 9 feet. Flue extension for higher ceilings is also available (Optional flue extension for 10' ceilings), Three-speed pushbutton control and integrated dual light assembly, Non-ducted flue extensions available in stainless steel only (includes non-ducted filter), Install hood so that the bottom of the unit is 30 to 36 inches above the cooking surface. Mounting height is affected by ceiling height