Palletization is the practice of loading freight onto pallets so it can be moved, stored, and shipped as a single unit. A forklift moves a palletized unit in seconds; the same goods loose would take many minutes of hand labor per touch. Palletization determines how fast your freight crosses a dock, how much damage it suffers, and even how it is priced — which is why it deserves more attention than it usually gets.
Common pallet types and sizes
By footprint
The North American standard is the 48″ x 40″ GMA pallet — the default for grocery, retail, and most LTL freight. Other footprints include 42″ x 42″ (telecom, paint), 48″ x 48″ (drums), and the 1200 x 800 mm Euro pallet common on import cargo arriving through PortMiami. Odd-size pallets exist for a reason, but they cost you: they cube out trailers inefficiently and can trigger dimensional repricing.
By material and design
Wood pallets dominate on cost and repairability. Plastic pallets last longer, weigh consistently, and suit food and pharma cleanliness standards. Block pallets allow four-way forklift entry; stringer pallets may allow only two-way. For export, remember that solid-wood packaging must be heat-treated and stamped under ISPM-15 — details in our guide to ISPM-15 export crating.
How to palletize freight properly
Column-stack cartons corner over corner for maximum compression strength, or interlock layers for stability — but know that interlocking trades away up to a third of stacking strength. Keep the load flush with the pallet edges: overhang crushes cartons and invites damage claims, while excessive underhang wastes cube. Stretch-wrap from the pallet base up with several wraps locking the load to the pallet, add corner boards for tall loads, and band heavy items. Label every pallet on at least two sides. Void fill and dunnage protect what wrap cannot.
Why palletization affects your freight bill
LTL carriers price on density, and pallet height and weight drive it — a poorly cubed pallet can push freight into a worse freight class and raise the rate. Unstackable pallets (pyramid tops, fragile crowns) often incur surcharges because they kill trailer cube. Good palletization also speeds cross-docking and reduces OS&D exceptions. Warehouses like Go Freight’s 104,000 sq ft bonded Miami facility palletize, re-palletize, and shrink-wrap inbound container freight daily — turning loose-loaded import cartons into rack-ready, shippable units.
Frequently asked questions
What is the standard pallet size in the U.S.?
The 48″ x 40″ GMA pallet is the North American standard and the safest default for LTL and retail distribution. Most U.S. racking, trailers, and dock equipment are designed around it.
How high can I stack a pallet?
Most LTL and warehouse operations work best at 48 to 60 inches of total height including the pallet, keeping the unit stackable and stable. Taller pallets may ship, but they risk unstackable surcharges and tip-over damage.
Do wood pallets need special treatment for export?
Yes. Solid-wood pallets and crates used in international shipments must be heat-treated and carry the ISPM-15 stamp, or the shipment risks being refused or re-packed at the border.
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