The Harman Magnafire Elite Coal Burning Fireplace Insert gives you the heating capacity of a coal stove while maintaining the beauty of your fireplace. It's Harman tough and efficient too, with one-piece, 1/4" thick steel plate main body and firebox. Heat that would otherwise be lost is captured by an efficiency enhancing air jacket which surrounds the firebox inside the fireplace. It is then forced into your home by two powerful blowers. Able to generate up to 80,000 BTUs and burn for more than 24 hours, the Harman Elite transforms your fireplace into your main heat source. Emptying ashes is a snap with the patented Harman Grate System and convenient ash pan.