Create a cozy atmosphere in your home with this Dual Fuel Ventless Natural Gas/Propane Fireplace Insert. Customize your fireplace with a face mantel or wall recess. Features include remote control, oxygen depletion sensor, and 26,000 BTU heat output to warm up to 1,350 square feet. Operates on natural gas or liquid propane. Please check local regulations before installation. This fireplace insert is vent-free and not recommended for altitudes over 4,500 feet. Made of durable metal, this product is perfect for adding warmth and ambiance to any room.