Stackability describes whether another load can be placed above a handling unit under the appropriate conditions. It is not established by a flat-looking top or a short packed height. Give the transport provider the packaging and goods restrictions rather than letting appearance answer the question.
This is a capacity-information guide. It does not certify packaging or provide an engineering limit for a pallet, crate or product.
Explain the restriction precisely
“Fragile” and “do not stack” communicate different information. One describes sensitivity; the other rules out using the space above the unit. A load may also need to remain upright, may not accept contact at certain points or may have a specific approved stacking arrangement.
| Field | Useful description |
|---|---|
| Stackability | Stackable under stated conditions, or non-stackable |
| Orientation | Whether the unit must stay upright |
| Packaging support | Relevant packaging or manufacturer’s handling instruction |
| Projections | Parts extending beyond the nominal footprint |
| Mixed shipment | Which particular units have the restriction |
Do not invent a supported weight merely to fill the form. When packaging information is unavailable, make that uncertainty visible before a quote assumes usable space above the goods.
Why low freight can still occupy valuable capacity
Consider a hypothetical 48 × 40-inch unit that is only 20 inches high but cannot accept anything above it. Its physical cube is smaller than a tall unit’s cube, but it still occupies a floor position and restricts the use of the space above.
This does not mean every carrier automatically charges one universal non-stackable surcharge. It means the restriction is relevant to the transport plan and may affect the applicable quotation. Supply the restriction before comparing prices.
Mark the specific units
For a shipment of six pallets with two non-stackable units, identify those two units by reference. A note that says “some are fragile” leaves the loading team without a usable distinction.
Keep the same unit references on the measurement sheet, booking information and handling labels. Photographs can help explain the packed shape, but written instructions should remain available without opening an image.
Avoid treating a crate as automatic permission
A crate can provide protection without being designed to carry another shipment above it. Its internal support, lid and fastening arrangements may have limits that are not visible from outside. Obtain the correct handling information from the person responsible for the packaging.
For the separate packaging-choice question, see our pallet-versus-crate worksheet. For occupied floor length, use the linear-foot reference.
Quote the space that is actually available
WTM can review LTL freight and dedicated options with stackability included. Describe all packed dimensions and gross weights alongside the restrictions. A clear declaration lets us assess the real load rather than a more compact imaginary version of it.
