Originating from selective racking systems, the pallets are now stored two rows deep instead of one.

The double deep racking system requires specialized pallet handling equipment using ether a specialized forklift (Reach Truck) or a standard unit a with double deep handling attachment.

The double deep pallet racking has 30% more capacity compared with the selective racking system, but only 50% of the pallets are immediately retrievable.

The double deep pallet racking system combines the advantages and disadvantages of Selective Racking System and Drive–in Racking system.