The Blue Sky Outdoor Living Mammoth Patio Fire Pit burns firewood or pellets, creating little smoke, sparks, ash, and odors. It generates significant heat for a great backyard bonfire. It is quick to assemble, use, and clean up. The high-efficiency fire pit works by pulling outside air into the bottom ring of holes on the burn chamber which moves through the hollow wall up to the inside ring of the holes. The heated air is released through the inner ring of holes into the burn chamber, infusing the fire with an extra boost of oxygen which improves the burn. The improved burn vaporizes wood particles, creating little to no smoke or embers. Due to the infused air technology design, this fire pit burns at very high temperatures which can surpass 1,900°F. Its unique design allows the grate within the pit to flex under significant amounts of heat. To support this flexing, it was designed with specific welds to potentially break when under significant pressure. This is normal and allows the ash catch to flex properly while remaining in place. Even though this product is painted with high temperature paint, at these temperatures, no paint can withstand direct flame and outdoor elements. With use and time, the surfaces of this fire pit will begin to develop a surface rust and mature into a beautiful patina finish. You can maintain the painted look with regular touchups of high temperature paint (not included) if desired. Do not use this unit on or near combustible surfaces or structures. Use only on hard, level surfaces. Do not use on asphalt, or directly on a wooden or composite wood deck. It may cause discoloration to a concrete surface. This fire pit should not be left outside uncovered when not in use. Store your fire pit in a dry location out of the weather to ensure continued use.