» Identifying Racking Systems » What is Drive Through and Drive In Racking? » Identifying Racking Systems » What is Drive Through and Drive In Racking? 
Drive In Racking offers high density storage of pallets on a FIFO (First In First Out) basis. Drive in rack is constructed in lanes using rack components with an integrated rail system to support the pallets. The rack can be designed to hold 2 to 10+ pallets deep.
Unlike selective rack, a lane of drive in/drive through is designed to handle a single SKU for all levels in the lane. Therefore it is best used for SKUs with a large quantity of like product. For drive in rack, pallets are loaded and retrieved from the front side of the rack.
Drive Through Racking differs from drive in by allowing the fork truck to travel all the way through the entire depth of the rack. This allows for pallets to be loaded from the front but retrieved from the back.
This results in a FIFO inventory basis for time-sensitive or perishable goods. Both system designs require minimal service aisle space, while maximizing a more dense storage area.