The Alera All-Purpose 4 Shelf Wire Shelving Starter Kit - 60W x 24D x 72H in. has a heavy-duty construction that's perfect for larger items and bulk inventory. Its sturdy frame is built from thick steel and boasts wire shelves that can each support up to 1,000 pounds. A protective black anthracite finish helps prevent rust and scratches. Assemble the unit as a four-tier shelf or two 2-tier units.