There are several types of warehouse racking
types, which are also known as pallet racks or materials handling systems. These racking systems are combined with metal, wooden or plastic pallets to form shelves of different levels. Goods placed on these racks for storage are then supported by decking bases, which comes in different widths. It is common to find that warehouse racking stacked as tall as several feet high and requires forklifts for the loading process.
Various warehouse racking types include selective racks, drive-in or drive-through racks, push-back racks, and flow racks.
Selective racks are the most customary pallet racking. These pallet racks are most suitable for narrow aisle racking, deep-reach and standard systems. Selective racks often utilize special narrow lift trucks and assist a single pallet in depth.
Drive-in racks and drive-through racks are ideal for high density storage. Usually constructed of steel, these racking type have enough space for a forklift to maneuver into its bay. While drive-in racks only have one entrance and exit, drive-through racks have access on both sides of the bay. Hence, drive-in racks are ideal for the last in, first out (LIFO) which is often used for non-perishable products while a drive-through racking is suitable for a first in, first out (FIFO) process. This racking type usually follows a floor-to-ceiling structure.
Flow racks are commonly used for high density storage. This particular racking system allows items to be loaded at the upper end and removed at the lower end while utilizing a FIFO system. Automatic rotation of products is achieved as the racks flow with loading and unloading. Flow racks employ gravity rollers that navigate in conjunction with the rack load and speed controllers to regulate item movement.