This 39.5" Wide Double-Sided Ethanol Burning Firebox in Black offers a clean burning flames that can be enjoyed from two rooms whether in your home or office. This firebox is a perfect way to incorporate the fascinating element of fire into your new build or renovation project. It is constructed of solid grade 304 polished stainless steel, built with 3mm thick double wall construction, and insulated with a patented rock wool insulation.