There are 3 sides to this style story. The EcoSmart Flex Firebox - Peninsula features 3 open sides for clear views of the flames from the front, back and one open side. Crafted from powder coated Steel with high temperature Black paint for rust prevention, each box includes Stainless Steel burners and decorative black glass charcoal. Each unit runs on Bioethanol, a refillable clean-burning fuel that doesn't require a chimney or special venting. This provides freedom and flexibility for builders, homeowners and landscape professionals. Integrated within cabinetry or masonry or simply set into a dividing wall with wood framing, these fireplace inserts make an eye-pleasing focal point in an indoor or outdoor setting.