Shelf space is valuable space in any commercial kitchen. You want to be able to stack as many pans as you can on a single shelf to utilize the available real estate; this includes stacking items atop one another. Rather than using flimsy foil or plastic wrap to cover your third-size pans, the Cambro One-Third Size Seal Cover (30PPC) provides a solid surface on which you can stack several other pans or items. The cover also provides an air-tight seal to help keep stored foods fresh and safe.