Compare complete carton and crate designs, check raw-wood components separately from strength and dryness, and review packing when the delivery route changes.
Choose the lightest system that meets the requirements
Start with a fitted carton when the product can be supported and protected in a repeatable approved design. Add a pallet when keeping cartons together helps handling. Choose a designed crate or base when the load, fragility or lifting method requires it, then compare complete packing and transport costs.
Compare your options ↓Choose the option that fits
Choose the structure that protects the product's weak points
A wooden crate is useful when the product needs a strong base, defined lifting access or protection against loads that an ordinary carton cannot reasonably manage. It is not automatically safer for every product. A rigid crate can transfer impact directly into a fragile item if the interior support is wrong; a well-designed carton system can be more appropriate for a lightweight product shipped repeatedly.
We begin with the product and the route. Identify where the item may be supported, what must never carry a load, whether it can be tilted, and how it will be lifted at collection and delivery. VelFreight coordinates the shipping and handling requirements with the supplier or packing contractor. The packer should design the outer structure and internal support for those requirements; sea transport alone is not a reason to choose wood.
Give the packing contractor a clear brief
Provide drawings or clear photographs showing the dimensions, gross product weight, centre of gravity if relevant, approved support locations and protruding parts. Identify surfaces that must remain scratch-free, parts that can be removed, and any manufacturer restrictions on orientation or fastening. Describe storage conditions and every handling stage, including transfers where the package is handled separately.
Describe the destination equipment before designing the base. A crate made for forklift entry may be unsuitable for a site that can only unload with a different arrangement. State access width, delivery surface and receiving restrictions. Ask the packing proposal to show external dimensions, total gross weight, lifting provisions, closure method, permitted stacking, inspection access and a safe unpacking sequence. These details determine whether the package can be handled as planned.
Compare carton, palletised carton and crate as complete systems
Do not compare an empty cardboard box with a finished wooden crate. The carton option may require fitted inserts, an overpack, a pallet and protection for compression or moisture. The crate option may require cushioning, a barrier enclosure and a structural support base inside it. Compare the complete finished package and the handling it allows.
A non-stackable crate may use more charged space or incur extra handling fees under the selected service. A load-bearing structure may allow stacking, but the packer must confirm the permitted load and the service must accept it. Avoid writing 'stackable' on the booking merely to obtain a lower rate.
| Packing system | Useful starting point | Failure to avoid |
|---|---|---|
| Fitted carton system | Repeatable products that can be cushioned and restrained in a validated box | Product-to-wall contact, weak closures or unsupported projections |
| Cartons secured to a pallet | Products already protected individually that benefit from unitised freight handling | Treating the pallet wrap as internal product protection |
| Enclosed crate with designed supports | Products requiring defined load paths, handling access or substantial external protection | A rigid shell with loose or incorrectly supported contents |
| Open base or frame with other protection | Cargo whose shape or lifting method needs a specialist arrangement | Assuming an open frame provides weather or puncture protection |
Keep structural strength separate from ISPM 15 compliance
ISPM 15 concerns phytosanitary measures for raw-wood packaging used in international trade, including dunnage. The IPPC distinguishes this from packaging made wholly from qualifying processed wood, such as plywood. A crate with plywood panels may still contain raw-wood runners or braces, so review every component rather than the name of the panel material.
For regulated wood packaging, use an appropriately authorised supplier and confirm treatment and marking requirements for the destination. Do not add or copy a mark yourself. The IPPC mark is not a certification of lifting capacity, cushioning, stack strength or moisture protection. A compliant wooden base can still be structurally wrong for the product. Have the packaging contractor identify the applicable wood components and document the separate structural design.
Check the material list, not just the word plywood
Request a component list for the complete package. In a teaching example, a supplier describes a crate as plywood but its drawing includes solid-timber runners, corner posts and loose blocking. The panel description does not determine the treatment status of those other components. IPPC's ISPM 15 scope includes relevant raw-wood packaging and dunnage and distinguishes packaging made wholly from qualifying processed wood.
Record wood compliance and structural suitability in separate columns. Also record dryness separately: Virginia Tech's packaging guidance distinguishes heat treatment from kiln drying. A treatment mark is not a moisture measurement. If the material list, mark or supplier documentation is unclear, resolve the specific component with the authorised provider before release rather than buying another crate solely on its panel description.
| Component | Specification to request | Separate evidence to retain |
|---|---|---|
| Carton or crate panels | Material type, supplier grade, thickness in mm and drawing revision | Package performance assessment; applicable wood status for the actual material |
| Base, runners and posts | Material, cross-sections and spacing in mm; approved load and lifting arrangement | Structural design plus wood treatment/marking information where applicable |
| Internal supports | Part codes, contact surfaces, restraint points and assembly drawing | Product compatibility and the approved loaded configuration |
| Dunnage and blocking | Material and intended location, including pieces added during loading | Applicable wood status; do not assume the crate's documentation covers unrelated added timber |
| Barrier and contact layers | Material code, closure and intended protection period | Dryness and compatibility records independent of wood treatment |
| Inspection panel | Panel identification, access method and restoration instructions | A way to inspect without uncontrolled removal of structural members |
Worked comparison: the crate changes volume as well as price
Consider an illustrative fragile display assembly weighing 28 kg. A proposed fitted carton measures 80 × 60 × 50 cm and has a gross weight of 34 kg. A crate proposal measures 90 × 70 × 65 cm and weighs 62 kg gross. Their external volumes are 0.2400 m³ and 0.4095 m³ respectively. The crate adds 0.1695 m³, or approximately 71%, before any pallet or handling adjustment.
Suppose the applicable variable transport component is an invented $180 per m³, with no minimum affecting this comparison. That component is $43.20 for the carton and $73.71 for the crate. Add hypothetical packing costs of $30 and $110 and the combined figures become $73.20 and $183.71. These are not complete freight quotations; fixed handling, final delivery, tax and insurance are excluded. The $110.51 difference is useful for a design decision only after both options have been assessed for protection.
| Measure | Fitted carton | Crate |
|---|---|---|
| Outside dimensions | 80 × 60 × 50 cm | 90 × 70 × 65 cm |
| Volume | 0.2400 m³ | 0.4095 m³ |
| Gross weight | 34 kg | 62 kg |
| Packing cost assumption | $30.00 | $110.00 |
| Variable transport at assumed $180/m³ | $43.20 | $73.71 |
| These two cost components combined | $73.20 | $183.71 |
Support the product where it can carry the load
Ask the product manufacturer to identify support and restraint points. A packing contractor should not have to guess them from an exterior photograph. A decorative handle, pipe connection or projecting control may look convenient but be unsuitable for restraint. If parts are removed for shipping, give each one a protected, identified location and include reassembly instructions.
Keep the protective functions distinct: the base supports weight, restraint controls movement, cushioning manages shock, and surface protection prevents abrasion or contamination. Check each function, even when one material serves several purposes. A rigid brace pressing on a fragile housing can itself cause damage. Document the packing sequence with photographs before the unit is closed so that future production can reproduce the approved arrangement.
Plan inspection and unpacking before the crate is sealed
An inspection opening should not require uncontrolled dismantling of load-bearing parts. Agree which panel can be removed and how it must be refitted, and retain the tools or instructions needed at the receiving point. If an authority or carrier opens the package, the responsible party needs a practicable way to restore its protection and record the change.
For destination unpacking, identify safe access, the order in which restraints are removed and the equipment that keeps the item stable. Do not assume the receiver knows which components belong to the product and which are disposable braces. Mark packaging parts separately where needed. Tall or unevenly weighted cargo requires a competent lifting and unloading plan; this article is not a substitute for one.
Validate the proposed package against the distribution route
ISTA distinguishes early design screening from tests intended to simulate particular distribution hazards. The appropriate approach depends on how the packed product will actually move. Ask a qualified packaging specialist or laboratory to select the assessment and explain what the result will and will not demonstrate. No single informal drop or a sturdy-looking crate establishes suitability for every freight journey.
Record the exact product and packaging version assessed. A pass for one weight, insert layout or closure does not automatically cover a heavier model or another supplier's materials. For a valuable fragile assembly, agree cosmetic, functional and dimensional acceptance criteria before evaluating the sample. Use trial-shipment observations to improve the design, without claiming that one successful journey guarantees all future deliveries.
Example: the same carton needs review when the delivery route changes
Suppose the 28 kg display assembly in the earlier comparison has a documented fitted-carton design assessed for a palletised warehouse journey. The buyer now wants individual cartons delivered onward to stores. The product and carton are unchanged, but the distribution process is different. Keep the existing evidence for what it actually covers; do not describe it as approval for the new individual-package journey.
Set out two complete proposals. One keeps the approved ocean pallet intact to a warehouse, then adds an assessed individual-shipment pack before onward delivery. The other uses a suitable individual-shipment pack from origin and builds the ocean pallet around those units. Record material, labour, finished carton and pallet dimensions, gross weights, and destination repacking charges for both. A crate is a third option only if its support and handling solve a defined requirement.
Have the assessment cover the chosen full route and the required cosmetic and functional condition of the display assembly. ISTA's design guidance calls for the distribution environment and acceptance criteria to be established before evaluation. Once the proposal is accepted, retain its product model, material codes, closure, support layout and final measurements. If the supplier substitutes a support or the receiver changes the onward route again, review the affected part of that approval.
This lets the buyer make a specific choice: keep the existing carton where its evidence and handling remain applicable, add the necessary protection at an agreed stage, or select a designed crate where the product requires one. Paying for wood without addressing the changed handling would not answer the original problem.
Approve the package and booking as one final record
Once the design is approved, remeasure the finished unit and obtain its actual gross weight. Send the dimensions, lifting details, stackability and photographs to VelFreight so we can coordinate the appropriate collection, ocean service and delivery arrangements. If the crate has changed from the quoted proposal, the transport cost or acceptance may need to be reconfirmed.
Keep a reusable record for repeat orders: product version, packing drawing, material specification, wood compliance information where applicable, closure photographs, measured dimensions and receiving instructions. This makes the next shipment more predictable and prevents a purchasing team from replacing a critical insert with a cheaper material without understanding its role.
- Select packing based on support, fragility, handling and route.
- Compare complete finished package costs and dimensions.
- Check raw-wood components separately from structural suitability.
- Confirm permitted stacking and lifting arrangements before quoting.
- Specify inspection access and safe destination unpacking.
- Release the final measured package data and packing version together.
Sources
Distinguishes heat treatment from drying; wood compliance, dryness and structural performance require separate evidence.
The intended distribution and acceptance criteria determine the relevant evaluation; a changed onward journey needs review.
This is a planning guide. Requirements vary by service and destination. Confirm cargo acceptance, charges, customs requirements and delivery arrangements with your provider before shipping.
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