This insert not only offers true beauty, but provides great heat output as well. The SUPREME-XT is tested and approved as a heater. With an AFUE rating of 75% this fireplace insert is extremely efficient. The SUPREME-XT offers Heat-N-Glo's Campfire logs, which duplicate the look and feel of a traditional campfire. Doors and front sold separately. Choose the style and size that's appropriate for you.