Dunnage shelves offer up to 133% more weight-bearing capacity than other HD Super shelves and can be combined with them to provide extra strength at the lower levels of a shelving unit where the heaviest loads will be placed. The 48" (1219mm) length has a 3,000-pound (1365kg) uniformly distributed static load capacity; the 60" (1524mm) shelves hold up to 2,400 pounds (1092kg).