Intended to be installed into a smaller area or custom cabinetry, the 28" Wide One-Sided Ethanol Burning Firebox was constructed with safety and quality at the forefront. Constructed of solid grade 304 polished stainless steel, built with 3mm thick double wall construction, and insulated with a patented rock wool insulation, this clean-burning firebox is fire rated so that no clearance is required between the firebox and construction materials such as sheet rock and wood framing. It can be built flush to the wall so you may enjoy more space on the floor.