Our box beam floating shelves are made from reclaimed lumber out of century old barns salvaged in the Midwest. Each piece is unique and will have sawmarks, nail-holes and knots that tell the story of where the wood is from. You gain the look of a solid shelf with the light weight ease of installation of a box beam (internal mounting brace included). Eliminates the need for shelf brackets under the shelf. The lock mitered joints make the seams nearly invisible.