WayhomartTwo SKUs in one container: splitting volume by CBM
A mixed container is not two sets of cartons pushed together. Convert both SKUs to CBM per unit, set the ratio, then stack by weight and size so the packing list matches the wall.
Challenge
The channel wants dish racks and storage baskets together, but neither fills a container alone; loading them "as they arrive" wastes volume, puts heavy cartons on light ones, and leaves the packing list out of step with the actual stack.
What we did
Convert each SKU to CBM per unit and units per container, work back from the target ratio to carton counts, stack heavy below light with same-size cartons adjacent, and number the container into zones so the packing list is checked zone by zone.
Result
- One container, two SKUs, allocation based on CBM
- Heavy and light cartons separated, reducing crush damage
- Packing list follows the stack, so inspection counts by zone
What this file records
A configuration file, not a client story. Client identities and commercial figures are not published; no number is given where none was measured.
Calculate before you load
| Step | Action | Output |
|---|---|---|
| 1 | CBM per unit for each SKU (carton volume ÷ units per carton) | Two comparable numbers |
| 2 | Work back from the target ratio to units | A unit ratio, not a guess |
| 3 | Reserve unusable space (door, stacking tolerance) | Allocatable volume |
| 4 | Stack by weight and size | Stack plan and packing list |
The formula and the four-column comparison are in KD vs welded wire racks.
Three stacking rules
Heavy below. Wire cartons can be heavy, and thin-diameter baskets deform under load.
Same size adjacent. Uniform cartons tile a layer; mixed sizes leave gaps, and gaps are freight you pay for.
Number the zones. Split the container into front, middle and rear; the packing list counts by zone, so unloading and inspection both stop hunting.
Three constraints of mixing
- A small share of one SKU raises its freight per unit. Below a certain ratio, LCL may be cheaper for that item.
- Mixing lengthens readiness. Both SKUs must be complete before loading; one delay holds the container.
- Documents must be per SKU. Packing list, invoice and origin information all itemised, not a single total.
When not to mix
- Lead times differ significantly, and waiting costs more than the freight saved.
- One item is a promotional rush that a mixed container would delay.
- Warehouse receiving capacity is limited; mixed containers cost more to unload and sort.
Where to go next
- Packaging and container loading: colour box or bulk.
- Changeover and scheduling: multi-SKU programme scheduling.
- Categories: dish rack range and baskets and organizers.
- Two carton specs in hand: contact us for the ratio.
Related product ranges
Send us your drawing or sample
Tell us the application, target market and annual volume. Our engineering team will review feasibility, tooling and lead time.
