The Osburn 2400 Wood Fireplace Insert is designed to convert a traditional decorative fireplace into an efficient heating system. It offers a substantial 100,000 BTU/hr heat output and features a 3.4 cubic foot firebox, making it suitable for keeping your home warm during long winter nights. The large glass window provides an excellent view of the fire. Key Features: Model Number: OB02401 High-efficiency and EPA certified stove Recommended heating area of 1,000 - 2,700 square feet Includes a blower with an ultra-quiet cross flow design and variable speed control (144 CFM) Equipped with a thermodisc for automatic blower shut-off when the insert cools down Metallic black color Glass air-wash system to keep the glass clean Top steel thickness of 5/16 inches Optimum efficiency rating of 78% Emissions of 3.9 g/h High heat-resistant C-cast baffle Refractory brick lining in the firebox for improved heat distribution Stainless-steel secondary-air system for enhanced gas combustion Adjustable handle for ease of use Provides a continuous view of the fire Recommended chimney diameter of 6 inches May qualify for government incentives related to wood-burning appliances.