Pallet Flow racking systems are designed around the principle of organizing products or space by depth rather than width, and pallets are easily accessible by forklift. This depth arrangement greatly reduces aisle space and increases storage density. Each bay of pallet flow racking can hold up to six pallets; with each pallet stored on wheeled carts that fit onto rails. The rails are slightly angled toward the load/unload side of the pallet rack in order to take advantage of gravity, saving enormous amounts of energy for moving heavy pallets. Pallet Flow racking is the best system for a small space, thus making it a very cost effective method of pallet rack storage.