The Stack Shelves are a customizable shelving system with crisp slabs of highly polished colored concrete that float off the wall in front of vertical metal bars. The shelves are available in four lengths and twelve different colors of concrete, each shelf weighing between 18 and 42 lbs. The brackets come in three heights and five metal finishes (antiqued brass, polished brass, satin nickel, polished stainless steel, and blackened steel).