Kozyheat #911XL is a direct vent gas-burning fireplace insert designed to provide efficient and safe supplemental heat to your home. With a BTU rating of up to 36,000, it can warm up to 1,000 square feet of living space. The unit features a millivolt board with burner and cover, a 150 CFM fan with limit switch and speed control, and a co-linear air duct for efficient heat distribution. The included log set and grill set enhance the realistic appearance of the flames. Enjoy the ambiance of a cozy fire without the hassle of wood or the mess of ashes.