A pallet collar is a hinged wooden frame that sits on a standard pallet, turning it into a box of whatever height you need. Add collars to build up, remove them to build down, fold them flat when empty. For a lot of businesses this is the sweet spot between shipping goods loose on a pallet and paying for purpose-built crates.
How they work
A collar is four or six boards joined by matching metal hinges. The hinges do two jobs: they locate the collar on the pallet edge, and they let it fold flat when it is not in use. Because the collar sits on top of the pallet rather than replacing it, four-way forklift entry is preserved.
Standard heights are 100, 200, 300 and 400 mm, and you combine them to match the height of the goods rather than shipping air. Standard footprints follow the pallet sizes: 800 × 600, 800 × 1200 and 1000 × 1200 mm.
Typical figures for a 1200 × 800 collar: 200 mm high, about 8.5 kg, roughly 175 litres of capacity, with an internal size a little under the external — around 1156 × 756 mm, since the frame sits on the pallet edge. A matching lid adds about 6.5 kg.
Stacking is limited: a common published maximum is seven collars per pallet, giving about 1.4 m of build height. Beyond that the structure is no longer relying on the collars in the way they were designed for.
The space saving
This is the main commercial argument. Folded flat, collars take up more than 80% less space than the equivalent wooden boxes. On a return leg, or in a yard holding empty packaging, that is the difference between a corner and a warehouse bay.
It also changes the economics of returnable systems. Returning empty crates means paying freight for air; returning folded collars and bare pallets means paying for a fraction of that volume. If your return legs are the reason a returnable system does not pay, collars are worth modelling before you give up on the idea.
The safety point nobody mentions
Here is the one thing we would most want a buyer to know, and it rarely appears in sales material: only stack collars from a single manufacturer on one pallet.
Minor differences in manufacturing tolerances between makers mean hinges and board edges do not align precisely. Stacked, those small differences accumulate into a structure that does not sit square and can fail under load. Mixing brands in a pool is one of the more common causes of collar-related incidents.
This matters more than it would for most packaging because of the next point.
There is no European standard for collars
We checked, and this surprised us: EPAL does not list a pallet collar among its standardised load carriers, and we could find no EN or UIC standard governing collar construction. Pallets have EPAL specifications, technical regulations, licensed producers and independent inspection. Collars have none of that.
The practical consequence is that dimensions, timber quality, hinge gauge and tolerances vary by maker, and the manufacturer's own standards are the only guarantee you have. That is not an argument against collars; it is an argument for knowing who made yours and buying consistently from them.
It is also why the mixing warning above has teeth. With a standardised product you could mix suppliers safely. Here you cannot.
ISPM 15 and collars
Straightforward, but worth stating because collars are easy to overlook when preparing an export shipment. Collars made of solid wood are wood packaging material: for export outside the EU they require heat treatment and marking, exactly like the pallet under them. Collars made wholly of plywood or OSB fall under the processed-wood exemption.
The failure mode we see is a properly treated and marked pallet carrying untreated collars. The consignment is not compliant, and the collars are the reason.
Where collars are the right answer
- Variable product heights. One collar inventory covers many product sizes, where crates would mean many part numbers.
- Returnable loops with expensive return legs, thanks to the folding.
- Mixed or loose goods that need containment but not full protection — components, castings, bagged material.
- Operations that want picking access. Hinges can be specified so one side opens as a door, letting staff pick from the stack without dismantling it.
Where they are not
Collars contain; they do not protect. For fragile goods, high-value items needing a sealed enclosure, anything requiring a moisture barrier and desiccant, or heavy machinery needing a bolted-down base and designed lifting points, you want a proper box or crate. Collars also do not stack as high as a purpose-built crate and offer less protection against impact on the corners.
If you are unsure which side of that line your product sits on, describe the goods and the route and we will tell you honestly — including when the cheaper option is the right one.
