Gravity Pallet Flow Racking system are generally first in, first out (FIFO). In a flow racking system, pallets are loaded into the storage lane from the loading aisle and fed by gravity towards the discharge aisle.

The pallets are first placed on the rollers that let them “flow” towards the front of the rack system. Once they’ve glided to the front of the system, the pallets rest on pallet stops until they’re unloaded from the pick face.

As pallets are removed or unloaded from the system, each of the pallets that were behind them rolls forward one position. This process can happen until the lane is empty or indefinitely if pallets are loaded into the system. Pallet speed is controlled by the type of rollers and brakes engineered into the system.