Define the perimeter of a square outdoor fire pit with this Simond Store steel ring insert. The listed outer dimensions are 29 by 29 inches, with a 25-inch square inner opening and an 8-inch height. Its 2 millimeter thick steel panels provide a defined structural edge, while the dark powder-coated finish coordinates with many landscape materials. The four-piece format is intended for a custom in-ground or raised fire pit surround using compatible stone or pavers. This is a metal fire pit liner, not a finished fire pit, burner, or masonry kit. Confirm the desired opening, local outdoor fire requirements, and any applicable clearances when planning the surrounding structure.