BUYING GUIDE · PLASTIC PALLETS

Rackable vs. Stackable Plastic Pallets: Key Differences and How to Choose 

If you are purchasing plastic pallets for a warehouse operation, one of the first questions you will face is whether you need a rackable pallet or a stackable pallet. The two terms are often used loosely — and sometimes interchangeably — in supplier conversations and product listings. That creates real problems when the wrong pallet ends up on a racking system it was never designed for.

This article explains what actually separates rackable and stackable plastic pallets, why that distinction matters for load capacity and safety, and how to decide which type fits your specific application.

What "Rackable" and "Stackable" Actually Mean

Before comparing the two, it helps to understand what each term is describing — because they are not mutually exclusive categories. They refer to different performance requirements, not different product families.

Rackable means the pallet is designed to support a loaded weight when placed on racking beams, with no full surface support underneath. In a typical selective pallet rack, only two beams contact the pallet. The deck must bridge that span without sagging or deforming under load.

Stackable means the pallet is designed to carry a load when another loaded pallet is placed on top of it. The pallet is supported across its full base — either by a floor surface or by the pallet below it. There is no unsupported span involved.

A rackable plastic pallet is designed to support a load on warehouse racking beams with no full-surface support beneath it. A stackable plastic pallet is designed to carry load when stacked vertically, with full base contact.

Some pallets are rated for both applications. Many are not. Assuming a pallet is rackable simply because it is heavy-duty is one of the most common and costly mistakes in warehouse procurement.

The Structural Difference That Determines Racking Suitability

The critical factor is the pallet's underside geometry — specifically, whether it has continuous runners or skids that span the full length of the pallet.

Rackable pallets typically use a three-runner (three-skid) or full-perimeter runner structure. These runners distribute the load across the racking beams and prevent deck deflection. Many rackable plastic pallets also incorporate internal steel reinforcement tubes to increase rigidity and prevent long-term creep under sustained load.

Nine-leg (nine-foot) pallets — a very common and cost-effective plastic pallet structure — are not suitable for standard racking applications. The nine legs are load-bearing points, not continuous runners. When placed on rack beams, the deck can deflect or collapse under load.

Understanding Load Ratings: Dynamic, Static, and Rack Load

Plastic pallet specifications typically include three load ratings. All three matter, but buyers often only check one.

⚠ Important: A pallet with a 3,000 kg static load rating may only carry 1,000–1,500 kg on racking. Never use static load as a proxy for rack load performance. Always request the rack load rating and the beam span it was tested against.

Which Applications Need a Rackable Pallet?

You need a rackable plastic pallet if any of the following applies to your operation:

• Goods are stored on selective, drive-in, or push-back racking systems

• Pallets will sit on beams for extended periods (days or weeks) under full load

• Your load per pallet exceeds 1 tonne when racked

• Forklift access to the pallet is from the rack face

• You are running an AS/RS (Automated Storage and Retrieval System) with strict pallet geometry and deflection requirements

Which Applications Are Stackable-Only Pallets Right For?

• Goods stored directly on the floor in stacked layers

• Pallet used primarily for transport — container loading, trucks, cross-docking

• No racking at any point in the supply chain

• Export or one-way shipping where cost per unit matters more than cycle performance

• Loads are light to medium, typically under 1.5 tonnes per pallet

Common Purchasing Mistakes to Avoid

Mistake 1: Buying a Nine-Leg Pallet for a Racked Warehouse

Nine-leg pallets are perfectly good for floor use. But they will not perform reliably on standard beam racking under significant load. Confirm pallet structure before ordering if your warehouse has racking.

Mistake 2: Comparing Only Static Load Ratings

Static load is not the relevant number for racking. Always ask for the rack load rating and the beam span it corresponds to.

Mistake 3: Ignoring Pallet Weight for Export

A steel-reinforced rackable pallet can weigh 20–30 kg or more. For large export orders, this affects total shipment weight and freight costs.

Mistake 4: Not Specifying Forklift Entry Requirements

Some three-skid rackable pallets only allow two-directional pallet jack access. Confirm whether four-way entry is required for your material handling equipment.

How to Choose: A Practical Decision Framework

A Note on Material: PP vs. HDPE

PP (Polypropylene) is more rigid and holds shape better under sustained load at normal temperatures. It is the more common choice for rackable applications in standard warehouse environments.

HDPE (High-Density Polyethylene) retains better toughness at low temperatures and is the preferred material for cold storage applications where PP can become brittle. However, HDPE has a higher tendency to creep under sustained load at elevated temperatures.

Why Work with Huading Industry

Huading Industry supplies both rackable and stackable plastic pallets across a wide range of sizes and load ratings, including steel-reinforced models for heavy-duty racking applications. Rather than recommending a standard product immediately, we work through your specific requirements — racking system type, beam span, load per pallet, forklift entry, and operating environment — before suggesting a product.

We supply pallets from 1000×800 mm up to 1600×1400 mm and larger, with options for custom dimensions. Both nine-leg and three-skid structures are available, as well as double-faced and blow-molded variants.

Not sure which pallet structure matches your racking system? Send us your beam span, load per pallet, and warehouse setup — we can recommend the right product and confirm the rack load rating before you order.

info@huading-industry.com  |  www.huading-industry.com

Frequently Asked Questions

Q: Can a stackable plastic pallet be used on racking?

It depends on the specific product. Some stackable pallets — particularly three-skid and full-perimeter designs — may also carry a rack load rating. Nine-leg pallets generally cannot be used on standard beam racking safely. Always check the manufacturer's rack load specification, not just the static load rating.

Q: What is the typical rack load rating for a rackable plastic pallet?

Common rackable plastic pallets carry between 800 kg and 2,000 kg on racking, tested at a standard beam span (often 800–1,000 mm). Heavier-duty steel-reinforced models can carry more. Always confirm with the supplier for your specific beam span.

Q: What beam span should I tell my supplier?

Measure the clear distance between the front and rear rack beams where the pallet rests. A typical selective rack configuration has a span of 800–1,100 mm. The longer the span, the more structural demand on the pallet.

Q: Do rackable plastic pallets always have steel reinforcement?

Not always. For sustained heavy loads above 1 tonne on racking, internal steel tube reinforcement is typically recommended. Ask your supplier whether the specific model includes steel and what tube thickness is used.

Q: What happens if I use a non-rackable pallet on racking?

Under significant sustained load, the deck can deflect between the beams, causing permanent deformation or structural failure. This is both a safety issue and a product damage risk.