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Double deep raking system: detailed introduction of advantages and disadvantages

Time:6/8/2022

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A variety of pallet racking storage systems are available on the market to meet a variety of needs. Some pallet racking systems are best suited for high product turnover and volume, while others may cater to low product turnover and volume, or a different mix of both.

Nowadays an increasingly popular pallet storage system is double deep pallet racking. We will cover the basic construction of double deep pallet racking and the advantages that make it such a popular choice. We will also discuss the potential disadvantages of double deep pallet racking and what you should know about your warehouse and equipment before making a decision.

What is double deep pallet racking?

Double deep pallet racking is composed of two standard selective racks set back-to-back to form a double deep pallet storage system. These double-deep racks are typically designed to be set against a wall or connected to another double-deep section in the back. Double deep selective racking provides a last-in, first-out product flow.

What are the advantages of double deep pallet racking?

● Up to 10-15% increase in pallet racking capacity, depending on warehouse rack layout and size.
● Increases storage capacity by up to 40% compared to selective pallet racking.
●Improves floor space utilization by 55% by eliminating unnecessary aisles and freeing up storage space.
● Provides 50% selectivity, i.e., immediate access to 50% of SKUs.
● Costs the same per pallet as selective pallet racking and is cheaper than two deep push-back racking systems with the same storage density.
● Easy migration and easy conversion to/from a single deep system
● Multiple frame profiles and adjustable beam levels available to reconfigure pallet sizes to accommodate changing requirements.
●Installation of a double deep pallet racking system eliminates the need to rent or build new storage space by cost-effectively increasing cubic space utilization (storage density).

What are the disadvantages of double deep pallet racking?

● For safe operation, the storage height in the static storage system is limited to 10 meters.
● A 15-20% storage loss is encountered because only a limited number of SKUs can be stored in the front storage location.
● Follow the last-in, first-out (LIFO) inventory principle to limit the types of SKUs that can be retrieved immediately.
● Reduce access to SKUs by placing half of the inventory behind another pallet when capacity utilization is full.
● Requires special double-depth arrival trucks and dedicated forklifts to access pallets
● Poor visibility of rear storage pallets, especially on the upper level of order pickers and truck drivers.
● Reduced pallet access speed, resulting in lower throughput rates.
● The most obvious disadvantage is that double-deep pallet systems require additional investment in special order picking equipment, such as new double-deep stretch trucks or extensions and balancing units for existing forklifts. However, most of these additional costs are offset by the advantages offered by the double-deep pallet system.

Double depth pallet racking is suitable for.

Double-depth pallet racking is suitable for companies with a limited product range and large or very large quantities, i.e. medium quantities of SKUs distributed in medium or large quantities.
Inventory with a medium to long shelf life. LIFO (Last In First Out) principle, not suitable for short shelf life items.
Widely used in: cold storage, paper, food service, manufacturing, distribution centers and dry goods store industries.

Now that you have clearly outlined the pros and cons of double-depth pallet racking, you will need to perform a thorough cost-benefit analysis considering parameters such as product volume, turnover, available space, warehouse rack layout and available picking equipment to determine if a double-depth pallet system is right for you.

How can I order double deep pallet racking or learn more?

To order a double deep pallet racking system or to learn more about our products, please visit our website or contact us via email. We are happy to help with projects of any size.

Ready to get started? Talk to one of our pallet racking system design experts.