Lorell 69139 2-Extra Shelves, f/ Wire Shelving, 48'' x 18'' x 72'', BK, LLR69139, LLR 69139, Industrial wire shelving supports up to 1,000 lb. evenly distributed per shelf. Each shelf adjusts in 1" increments. Shelving is made of steel with a powder-coatfinish, 10-gauge shelf surface, three-gauge frame, and six-gauge wave pattern. Easy collar-and-sleeve assembly requires no tools. Units can be expanded with use of add-on units and extra shelves. Starter unit includes four shelves and four posts. Add-on unit (sold separately) includes four shelves and two posts. UPC Code 035255691390, Quantity 2/CT