Pallet Racking Guide
Everything you need to understand, select, and implement the right pallet racking system for your facility—designed for safety, efficiency, and long-term scalability.
What You’ll Learn
System Types & Configurations
Understand the differences between selective, drive-in, push-back, and cantilever racking systems.
Design & Layout Best Practices
Learn how to maximize space, improve workflow, and ensure safe load distribution.
Safety, Compliance & Maintenance
Discover inspection requirements, weight capacities, and how to keep your system operating reliably.
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Welcome to the Alpha Omega Shelving Pallet Racking Guide
Your trusted resource for pallet racking systems, warehouse storage solutions, and material handling best practices.
This guide is designed to help facility managers, warehouse operators, and business owners understand how pallet racking works, compare system types, and make informed decisions for safer and more efficient storage.
We provide clear, practical, and regularly updated information covering everything from selective pallet rack and drive-in systems to layout design, safety standards, and inspections. Our goal is to deliver real-world guidance you can apply directly to your operation. For exact specifications, load capacities, and engineering details, we recommend confirming final information with the original manufacturer.
Have questions about pallet racking or warehouse design?
Our Pittsburgh-based material handling experts can help you identify rack components, evaluate your current setup, and design a more efficient layout tailored to your facility.
Call (412) 276-1200 to speak with our team and get expert guidance on optimizing your warehouse space with confidence.
Pallet Rack
Pallet rack is a structural storage system designed to hold palletized loads on horizontal beams in a multi-level configuration, allowing warehouses and distribution facilities to maximize vertical space and storage density. Also referred to as pallet racking, these systems are a foundational component of warehouse storage and material handling operations across industries including manufacturing, logistics, e-commerce, and cold storage.
All pallet rack systems share the same core purpose — to safely organize and provide access to palletized inventory — but differ significantly in design, configuration, and application. Key variables include frame height and depth, beam length and capacity, connection type, and upright hole pattern. Choosing the right system depends on your pallet dimensions, load weight, turnover rate, and facility layout.
Teardrop pallet rack is the most widely used style in North America. Named for its distinctive teardrop-shaped holes in the upright frames, teardrop rack allows beams to be inserted and adjusted quickly without tools, making installation and reconfiguration faster than older bolt-style systems. While teardrop uprights from different manufacturers may appear visually similar, components are not universally interchangeable — each brand engineers its own tolerances, steel gauges, and connection geometry. Mixing components from different manufacturers is not recommended and may compromise load ratings and safety compliance.
To identify your existing rack system or confirm manufacturer compatibility, use the Pallet Rack Identifier at the bottom of this page.
Components
A pallet racking system contains three primary components: upright frames, beams, and wire decks.
Upright Frames
Upright frames form the foundation of any pallet rack system, supporting the weight of stored materials and connecting directly to the horizontal beams. Built from either roll-formed or structural steel, these vertical columns feature a series of precision-engineered punch holes that allow beams to be positioned at adjustable heights. This flexibility makes it easy to customize storage levels based on pallet size, product type, or equipment requirements. Designed for strength and stability, upright frames are the structural backbone that ensures the safety and performance of a warehouse racking system.
Cross Beams
Crossbeams create the horizontal support levels that connect upright frames and carry the pallet loads. They’re manufactured from durable roll-formed or structural steel and come in a range of lengths and load capacities to fit different warehouse applications. When properly installed, beams lock securely into the uprights to create a stable, heavy-duty shelving surface. Their design allows for easy reconfiguration, making crossbeams an essential component for adaptable warehouse storage systems that evolve with changing operational needs.
Wire Decking
Wire decking enhances both safety and functionality in pallet rack systems by providing a strong, open-grid surface that supports pallets and loose materials. The wire mesh design improves visibility and ventilation while allowing sprinkler systems to function effectively in case of fire. Decking also prevents items from falling through or shifting between beams, creating a safer, more organized storage environment. Built for durability and compliance with modern warehouse safety standards, wire decking is a simple but essential addition to any pallet rack configuration.
Styles of Wire Decking
Wire decking is a load-supporting surface installed across pallet rack beams to create a stable, open-grid platform for storing palletized and non-palletized goods. It is a standard safety and storage component in most pallet rack systems, improving visibility, airflow, and sprinkler penetration while preventing boxes and loose items from falling through the rack structure.
Wire decking comes in several styles, each engineered for specific beam types, load capacities, and rack configurations. Selecting the right style depends on your beam profile, maximum load weight, and any applicable fire code or safety requirements for your facility.
Flanged/Universal
This wire decking style is designed for pallet rack box beams, structural racks, and selective systems that do not have an inside step. The flared channel design allows it to rest securely on a wide range of beam types, making it a versatile and universal choice for many warehouse applications.
U-Channel Standard
U-channel decks are built for standard step beams with a 1 5/8-inch step and offer enhanced load strength compared to flare channel options. The support channels fit neatly into the beam step, creating a flush, reinforced surface for palletized goods. These decks are ideal for facilities prioritizing heavy-duty capacity and stability, though they are not compatible with beams lacking a step.
Inside Waterfall
Inside waterfall wire decking is used when the outer beam face must remain visible for barcode labels, safety markings, or load capacity stickers. Instead of wrapping over the outside of the beam, the waterfall edge drops inside the front face, maintaining a clean, accessible appearance. This design improves organization and labeling visibility while maintaining the same reliable support and airflow that wire decking provides.
Dividers
Pallet racking dividers are essential for improving warehouse organization, separating inventory, and preventing product damage within pallet rack systems. These dividers enhance safety by keeping materials properly contained and reducing the risk of shifting or falling items.
Hanging Shelf Divider
Hanging shelf dividers will hang from the wire decking above and connect securely to the deck at the beam level below, creating individual storage sections that improve visibility, accessibility, and inventory management within a rack system.
Standing Shelf Divider
Designed to create clear separation between products on a pallet rack beam level, these dividers clip directly into the wire decking and lock securely in place. They help maintain organized storage, improve visibility, and prevent items.
M Divider
M dividers are used to organize and separate products stored vertically within pallet rack bays. Shaped like the letter “M,” these dividers mount to the wire decking and provide individual storage lanes for items such as doors, panels, or sheets. They help maintain order, prevent product damage, and improve picking efficiency.
General Accessories
Warehouse accessories play a critical role in improving storage organization, protecting inventory, and enhancing overall warehouse safety. From pallet rack protection and safety barriers to wire decking and storage add-ons, the right accessories help maximize efficiency and extend the life of your racking system.
At Alpha Omega Shelving, we offer durable, reliable warehouse accessories designed for industrial environments—helping facilities optimize storage, reduce damage, and maintain safe, high-performing operations.
Row Spacer
Row spacers are used to stabilize and align back-to-back rows of pallet racking while maintaining proper space for safety and ventilation. They help ensure consistent spacing, improve rack stability, and support compliance with fire safety and warehouse design standards.
Wall Ties
Pallet rack wall ties anchor single rows of racking to the warehouse wall, providing added stability and alignment. They help prevent movement or tipping, ensuring a secure and code-compliant storage system in areas where back-to-back rows are not used.
Pallet Stops
Pallet stops are safety components installed at the back of pallet rack levels to prevent pallets from being pushed too far and falling through or damaging walls and product. They provide a simple yet effective way to maintain proper pallet placement and protect both inventory and racking structure.
Rack Back
Rack backing is a protective barrier system mounted to the back of pallet racking to prevent products or pallets from falling into aisles or work areas. Commonly made from welded wire mesh panels, rack backing enhances warehouse safety by containing inventory while still allowing visibility and airflow throughout the storage system.
Decking
Pallet racking decking provides a stable, secure surface for storing pallets, cartons, and loose inventory, helping improve warehouse safety, load distribution, and organization. Common options like wire decking, steel decking, and pallet rack shelves also enhance fire code compliance and visibility within your racking system.
At Alpha Omega Shelving, we offer durable pallet rack decking solutions for warehouses, industrial facilities, and commercial storage environments—designed to maximize safety, efficiency, and long-term performance.
Wire Mesh Deck
Wire mesh decking is a metal grid panel designed to sit on pallet rack beams, creating a safe and stable surface for storing pallets, boxes, or loose items. It improves load support, increases fire safety by allowing sprinkler water flow, and enhances visibility and airflow throughout the rack system.
Corrugated Deck
Corrugated decking is a solid steel panel with a ribbed design that provides a strong, durable surface for pallet rack shelves. Unlike wire mesh, corrugated decking offers complete coverage, making it ideal for storing small parts, cartons, or irregularly shaped items that might slip through open grid decks. It also enhances shelf rigidity and load distribution across the racking system.
Pallet Supports
Pallet supports are steel channels that drop between pallet rack beams to provide additional reinforcement and stability for stored pallets. They help prevent pallets from sagging or falling through when not fully supported by the beams, improving overall safety and load distribution. Pallet supports are commonly used with wire decking or as a standalone option in selective rack systems.
Punch Deck
Punch Deck is a steel decking option designed with a perforated surface that allows for airflow, light penetration, and fire sprinkler efficiency. It provides a solid yet ventilated platform for storing pallets, cartons, or irregular loads. Known for its strength and durability, Punch Deck is often used in applications requiring a smooth, debris-free surface, such as food storage, retail, or clean warehouse environments.
Safety Products
Pallet rack safety products are designed to prevent damage to racking systems, protect inventory, and improve overall warehouse safety. Solutions such as rack guards, column protectors, safety barriers, and end-of-aisle protection help reduce impact from forklifts and daily operations.
At Alpha Omega Shelving, we offer a wide range of warehouse safety products to reinforce your pallet racking, minimize costly damage, and maintain a safer, more efficient facility.
Column Guards
Column guards are protective barriers designed to shield pallet rack uprights from forklift and pallet impact. Installed at the base of each frame, they absorb and deflect collisions that could compromise rack integrity or lead to costly repairs. Available in both steel bolt-on and wrap-around styles, column guards are a simple and effective way to extend the life of your racking system and enhance overall warehouse safety.
End Row Guard
End row guards protect the ends of pallet rack aisles from impacts caused by forklifts, pallet jacks, and other warehouse equipment. Positioned at the outermost frames, these guards take the brunt of accidental contact, preventing damage to racking structures and maintaining overall system stability. Built from heavy-duty steel, end row guards are a cost-effective safety measure that extends the life of your pallet rack investment while keeping aisles safe and organized in high-traffic warehouse environments.
Guardrail
Guardrails provide a strong physical barrier that protects personnel, equipment, and pallet racking from forklift or vehicle impact in busy warehouse environments. Commonly installed around pedestrian walkways, machinery, and storage areas, guardrails help define safe traffic zones and prevent costly damage or injury. Constructed from heavy-duty steel and anchored securely to the floor, they offer long-term durability and visibility, making them an essential component of any warehouse safety system.
Handrail
Handrails create safe walking zones for employees by providing a secure barrier between pedestrian areas and active equipment traffic. Commonly installed along mezzanines, platforms, stairways, and walkways, handrails help prevent falls and guide movement through busy warehouse environments. Built from durable steel or aluminum, they deliver long-lasting stability and compliance with safety standards, ensuring both protection and organization throughout your facility.
Engineered Pallet Rack Systems
Selective Pallet Rack
Standard selective pallet rack is the most widely used warehouse racking system, known for its versatility and straightforward design. This system allows direct access to every pallet, as each load is stored in a single-deep lane without obstruction. The key difference between manufacturers lies in the beam-to-frame connection, identified by the punch hole pattern on the uprights, with teardrop racking being the most popular and interchangeable option. Selective pallet rack is available in both roll-formed and structural steel styles, making it adaptable for everything from light-duty storage to demanding industrial applications.
Push Back Rack
Push-back rack systems are a high-density pallet storage solution engineered to increase capacity and efficiency within warehouse and distribution environments. Pallets rest on a series of nested carts that glide along inclined rails, allowing each new pallet to push the previous load backward into the lane. When a pallet is removed, the remaining pallets automatically move forward to the pick face, ensuring smooth and reliable product rotation.
Drive-In Rack
Drive-in rack systems are designed for maximum storage density, making them ideal for high-volume, low-SKU warehouse environments.
Pallet/Gravity Flow Rack
Pallet flow rack, also known as gravity flow rack, is a dynamic storage system that uses sloped roller tracks to move pallets automatically from the loading side to the picking side.
Carton Flow Rack
Carton flow rack is a high-efficiency shelving system designed for small to medium-sized products stored in bins, totes, or cartons.
Cantilever Rack
Cantilever rack is a versatile storage system designed for long, bulky, or irregularly shaped items such as lumber, piping, tubing, and sheet goods.
Automated Storage and Retrieval Systems (ASRS)
Automated Storage and Retrieval Systems (ASRS) are mechanized storage solutions designed to optimize warehouse efficiency, reduce labor costs, and maximize space utilization.