Steel Shelving Unit with Particleboard Shelves, Five-Shelf, 48w x 24d x 84h, Steel, Black Shelving is made of heavy-duty riveted steel construction. Shelves adjust in 1.5" increments to accommodate items of varying heights. Assembles vertically or horizontally. Assembles with a rubber mallet (not included). Durable powder-coated finish is rust resistant. Riveted steel construction.