Heavy-duty cantilever racks improve storage density and enable safer handling for long, heavy materials by storing them off the floor. Cantilever racking is effective for almost anything that doesn't work with pallet rack, like lumber, bar stock and extrusions. This 16' single-sided upright combines with arms and braces to create a rack system that fits your product and your floor space. Capacity ranges from 12,000 to 12,900 pounds based on arm length.