Requires separate purchase of a non-ducted kit (RRK51) for indoor exhaust recirculation., Two 20-watt halogen lamps provided., Ducted/non-ducted telescopic flue accommodates ceiling heights from 8 to 9 feet. Extension flues for higher ceilings are also available for ducted and non-ducted applications., Install hood so that the bottom of the unit is 24 to 30 inches above the cooking surface., Multi-speed slide control., Heat Sentry adjusts speed of blower to high in case of excess heat., 120 Volts. 3.1 Amps. 370 CFM. 6" RD Duct.