Push Back: These systems increase storage density, allowing you to fully utilize your available warehouse space. Push back rack also offers the ability to increase pallet count without sacrificing selectivity, making it an increasingly popular storage option. This type of pallet rack system often requires a higher initial investment, but can quickly pay for itself by increasing efficiency.
Drive-In: Drive-in racking tops the list in terms of storage density. This system eliminates aisles, maximizing warehouse cube utilization. Drive-In systems can even increase your warehouse space by up to 60%. Drive-in systems are not designed for every application, however. Because they’re a first-in, last-out system, they’re typically only suited for inventory that moves in large quantities and isn’t time-sensitive. Products may sit idle in a bay of drive-in racking for extended periods, and poor utilization of the racking results in the “honeycombing” effect, wherein only 40-60% of the racking is occupied.
Pallet Flow: Also known as “gravity flow,” this system uses metal rollers and the force of gravity to move pallets through the system. Pallet flow works in a first-in, first-out sequence, and is engineered to meet the individual application’s needs. Pallet flow is most often used as a first-in, first-out rack system.
Carton Flow: Commonly known by the name “Span Track,” carton flow rack is designed to increase productivity and create an overall safer warehouse. This system also uses metal or plastic rollers with gravity to create the pick face. Carton flow is often found for high-volume products that are being picked daily. As its name suggests, carton flow rack is normally used for cartons and cases, as opposed to a palletized product.
Cantilever Rack: Cantilever systems store things like lumber, steel, and items that are too long/awkward to fit on pallets. This system stores these items in long continuous runs, which keeps vertical uprights from interfering with the placement of the product on the shelf.