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What Are The Common Types of High Density Racking?

Author: Site Editor     Publish Time: 2024-03-14      Origin: Site

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High-density racking refers to storage systems that maximize the use of available space by storing items in a more compact and efficient manner. There exist various kinds of high-density racking systems, each crafted to fulfill particular storage requirements.

Let's learn different types of high density racking:

1. Narrow Aisle Racking - High Density Racking

Description: Narrow aisle racking features narrower aisles between racks, and specialized forklifts are used to navigate these tight spaces.

Advantages: By optimizing the use of height space, narrow aisle racking enables for high-density storage while maintaining accessibility. It's suitable for warehouses with limited floor space.


Specialized Forklifts: Necessitates the use of specialized lift trucks for navigating narrow aisles.

Efficiency: Enhances efficiency but requires precision in forklift operation.

WLD Brand Narrow Aisle Racking

WLD Brand Narrow Aisle Racking

2. Drive-In Racking - High Density Racking

Description: Drive-in racking is designed for LIFO inventory management. Pallets are stored in “small alleys” composed of shelves, and a forklift is used to drive into the shelves to store or remove pallets.

Advantages: Drive-in racking increases the amount of goods that can be accommodated by carefully setting the number of aisles. It is suitable for items with slow inventory turnover and large.


LIFO System: Last-In, First-Out system may impact the accessibility of older inventory.

Forklift Navigation: Requires careful forklift operation within deep lanes.

WLD Brand Drive-in Racking

WLD Brand  Drive-in Racking

3. Drive-Through Racking - High Density Racking

Description: Similar to drive-in racking, drive-through racking enables forklift access from both sides, providing a First-In, First-Out (FIFO) inventory system.

Advantages: Combining the benefits of high-density storage and FIFO access, drive-through racking is suitable for products with moderate turnover and a need for strict inventory rotation.


Aisle Space: Requires wider aisles to accommodate forklifts entering from both sides.

Forklift Traffic: Manage forklift traffic to prevent congestion.

4. Push Back Racking - High Density Racking

Description: Push back racking is a flexible system where pallets are loaded from one side, and subsequent pallets push the previous ones towards the other side on inclined rails.

Advantages: This system boosts storage utilization effectiveness while maintaining the selectivity of a dynamic storage solution. It's efficient for storing multiple pallets of the identical stock keeping unit (SKU).


Dynamic Storage: Combines density with selectivity through dynamic storage.

Maintenance: Requires periodic maintenance of inclined rails.

5. Pallet Flow Racking- High Density Racking

Description: Gravity is employed in pallet flow racking to convey pallets via rollers or wheels, allowing for a First-In, First-Out (FIFO) inventory system.

Advantages: Ideal for products featuring expiry dates or those requiring automatic inventory turnover. Pallet flow racking guarantees efficient use of space and order picking.


Gravity Flow: Requires proper setup to ensure smooth movement along rollers or wheels.

Space Efficiency: Efficient use of space but may limit accessibility.

WLD Brand Pallet Flow Racking

WLD Brand Pallet Flow Racking

6. Radio Shuttle Racking System  - High Density Racking

Description: The Radio Shuttle Racking System involves a shuttle controlled by remote, running on guide rails. It is suitable for single or less variety cargos, providing high-density storage and reducing labor costs.

Advantages: This system increases storage volume utilization and reduces labor costs by optimizing forklift movements. It is well-suited for warehouses emphasizing efficiency, spatial economy, and selective access.


Remote Control Reliability: Ensures the reliability and proper functioning of the remote-controlled shuttle.

Labor Cost Reduction: Emphasizes efficiency and labor cost reduction through optimized forklift movements.

WLD Brand Radio Shuttle Racking System

WLD Brand Radio Shuttle Racking System

7. Double-Deep Racking - High Density Racking

Description: Double-deep racking involves storing pallets two rows deep, reducing the number of aisles required. Forklifts with extending forks are used.

Advantages: This system increases storage density while retaining a level of selectivity. It's competent for products with moderate turnover and larger quantities.


Forklift Adaptation: Forklifts with extending forks are essential for proper operation.

Selectivity: Balances increased density with a moderate level of selectivity.

WLD Brand Double-deep Racking

WLD Brand Double-deep Racking

8. Mobile Racking (Mobile Shelving) - High Density Racking

Description: Mobile shelving has racks or shelves installed on movable carts that traverse tracks, compacting storage space by eliminating static aisles.

Advantages: By eliminating static aisles, mobile racking maximizes space utilization. It is suitable for scenarios where spatial economy is critical.


System Stability: Ensures security and durability during carriage movement.

Ease of Operation: Requires a user-friendly system for moving shelves.

WLD Brand Mobile Shelving

WLD Brand Mobile Shelving

9. Automated warehousing and access Systems (AS/RS) - High Density Racking

Description: AS/RS utilizes automation, such as robotic arms or cranes, for efficient warehousing and access. It can include various configurations based on the type of automation used.

Advantages: AS/RS offers rapid and precise warehousing and access, reducing the need for manual labor. It is ideal for high-throughput operations with a focus on efficiency and space utilization.


Automation Complexity: Varies based on the type of automation used (robotic arms, cranes).

Initial Investment: Consider upfront costs for automation implementation.

Operational Efficiency: Ideal for high-throughput operations but requires proper maintenance.



10. Selective Pallet Racking - High Density Racking

Description: Selective pallet racking is a multi-purpose system where each pallet is directly accessible from the aisle. It typically uses tall supports and horizontal load beams to support pallets.

Advantages: This system provides excellent selectivity and versatility. It is ideal for warehouses with many product types and different pallet sizes.


Accessibility: Ensures direct access to every pallet, suitable for fast-moving goods.

Forklift Compatibility: Requires standard forklifts for efficient operation.

Selecting the right high-density racking system involves a detailed analysis of product characteristics, storage requirements, and operational considerations. Each system has special attributes that cater to particular storage requirements, and the choice depends on the priorities and constraints of the warehouse.

In addition, when selecting a high-density racking arrangement, it's important to evaluate the particular requirements of the warehouse, including product characteristics, inventory turnover, space constraints, and operational preferences. Each system offers unique advantages and considerations, requiring careful evaluation to determine best-fit solution for a given warehouse environment.

WLD Brand Selective Pallet Racking

WLD Brand Selective Pallet Racking

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