Create a custom fireplace with the Duluth Forge 400 series vent free zero clearance fireplace insert. Framed without air gaps, this unit can be paired with a face mantel or recessed directly into a wall. The dual burner produces generous flames with a realistic brick liner. Features like thermostat control, oxygen depletion sensor, and piezo ignition make it efficient and safe. Radiating 32,000 BTU of heat, it warms up to 1,500 square feet. Made of durable metal, it runs on natural gas or propane. Elevate your home décor with this stylish, efficient fireplace insert.