The Volcano Plus is a highly efficient, noncatalytic, EPA-approved fireplace insert. The Volcano Plus can heat up to 2,000 square feet, with Btu ratings estimated at 75,000. It is the largest fireplace insert available. The insert has a unique and modern design, with a flush face. The Volcano Plus also offers a very large and high viewing area. The fireplace comes completely assembled, with a patented automatic air control that regulates combustion to a preset burning rate. Contact: (877) 593-4722 or www.supremem.com.