Air King AK917 Deluxe Combination HeatersThese Heaters are the Solution to Rooms that Need Extra Warmth. Whether you Want Extra Lighting, a Night Light and/or an Exhaust Fan is Up to You. We have the Combination that is Right for Your Need. The Combination Heater and Bulb Heater Series will Instantly Make Your Home a More Comfortable Place. HVI2100 Certified And Rated Type Ic For Ceiling Insulated To R-40 Easily Installs Using the Included Adjustable Hanging Brackets Utilizes One or Two 250 Watt Maximum Type R40 Medium Base Infrared Lamps (Lamps Not Included) Include a 70 CFM Exhaust Fan Exhaust Capacity: 65 - 85sq. ft Duct Size: 4" Amps: 3 HVI CFM/SONES@.1 WG: 70/3.5