Compare gas stove shipping proposals by the cost and quantity that can actually be delivered and received. Begin with finished outer cartons and units per carton, build the proposed load, then price packing, transport and unloading together. Use container volume for an initial screen and book against the approved load plan.
For an importer, the practical question is often whether to ship loose cartons, accept a palletized proposal or change the order mix. The answer depends on the packing hierarchy and the receiving operation as well as the ocean-freight quote. A low container rate can still produce a high cost per saleable unit when the proposed load carries fewer units or the warehouse cannot unload it as planned.
The calculations below use identified ECOBRIDGE packing references and clearly labeled fictional cost exercises. Each example keeps the tabletop stove and built-in cooktop on separate order lines.
Measure the finished outer carton
The April 2026 ECOBRIDGE catalog gives three dimensions for Model 6003. It lists the appliance, its color box and an outer carton containing eight units. Use the figures on PDF page 4, printed page 06, as a reference when requesting measurements of the finished order.
| Record | Listed dimensions | Calculated volume | How the buyer should use it |
|---|---|---|---|
| Appliance | 577 × 278 × 53 mm | 0.008501518 m³ | Use for appliance dimensions. |
| Color box | 595 × 70 × 335 mm | 0.01395275 m³ | Use for the individual retail box. |
| Outer packing carton | 595 × 345 × 610 mm; 8 units | 0.12521775 m³ per carton | Starting point for the carton census and shipment-volume calculation. |
Divide the outer-carton volume by eight to obtain 0.01565221875 m³ per unit for this reference pack. Using the bare appliance volume instead would understate that per-unit outer-pack allowance by about 45.7%. Even using the color-box volume would understate it by about 10.9%. The practical correction is to request the finished transport pack before comparing freight allowances.
Use the same dimensional calculation for each SKU.
Outer-carton m³ = length in mm × width in mm × height in mm ÷ 1,000,000,000
Per-unit carton allowance = outer-carton m³ ÷ units per outer carton
For comparison, the Model 6504S product page, accessed 4 November 2026, lists a 910 × 550 × 140 mm carton with one unit per carton. Its calculated volume is 0.07007 m³ per unit. Keep that one-unit pack separate from the eight-unit 6003 master carton. Replacing both records with a generic “cartons × pieces” assumption would change the shipment quantity substantially.
For an order that is not a multiple of the stated pack quantity, resolve the last carton explicitly. For example, 402 units in eight-unit cartons require 50 full cartons plus a separate two-unit remainder. Do not calculate 50.25 physical cartons and assume the remaining pack has one quarter of the normal external volume. Obtain its actual pack-out, dimensions and protection arrangement, or revise the order to a full-carton quantity.
Use container cube to screen a proposal, then review the load
Hapag-Lloyd’s 20-foot standard example lists 33.2 m³ capacity, inside dimensions of 5,900 × 2,352 × 2,395 mm and a door opening of 2,340 × 2,292 mm. The carrier gives these as fleet examples. Confirm the assigned equipment with the forwarder.
Dividing 33.2 by the 6504S reference-carton volume gives about 473.8, or 473 whole cartons after rounding down. That is a volume-only screen under ideal space-use assumptions. The 6504S listing gives a separate 20GP reference of 390 units. The two figures use different inputs. Before booking, ask the packer for the orientation, clearances, stack limits, weight distribution and loading sequence behind the proposed count.
The example container’s door is also lower than its inside roof. A proposal that checks only the inside height has not established an entry path for a completed load. Review the finished handling unit, including its pallet, protection and the equipment needed to move it.
The practical packing benchmark is Hapag-Lloyd’s Container Packing brochure, sections 3.2–3.3. It connects planning to cargo dimensions and weights, equipment limits and unloading arrangements. It also explains how packaging, transport time and moisture affect stack strength. The October 2011 brochure informs the planning sequence. Use the assigned equipment and approved packing specification to establish numerical limits.
Ask the packer to turn the carton census into a load proposal that shows where each line goes, the permitted orientation and stack arrangement, the securing space and how the receiver will remove it. Compare the proposed quantity with the cube screen. If it is lower, ask which constraint binds. A lower count may be justified by the pack or receiving method; it should have a traceable reason rather than an unexplained utilization percentage.
Use the separate pallet planning guide for carton-to-pallet footprint geometry. For this container decision, the relevant output is the finished handling-unit envelope and its place in the complete load, including the entry and unloading sequence.
Compare the cost of the handling method
Request a quote for each feasible method against the same delivery scope. Identify which charges are included at origin and destination. Include the planned delivered quantity for each proposal so the total can be compared per unit.
| Input | Loose-carton proposal | Palletized proposal |
|---|---|---|
| Assumed units per shipment | 1,000 | 840 |
| Shared-scope freight charge | 1,200 CU | 1,200 CU |
| Packing and unitization | 100 CU | 300 CU |
| Destination unloading | 250 CU | 120 CU |
| Total compared cost | 1,550 CU | 1,620 CU |
| Cost per assumed unit | 1.550 CU | 1.929 CU |
These quantities and costs are invented inputs for a commercial comparison, unrelated to a validated loading plan for either named model. In the exercise, cheaper pallet unloading does not offset the extra packing expense and lower assumed shipment quantity. The pallet proposal costs about 0.379 CU more per unit on the included charges.
A buyer could still prefer that proposal if receiving compatibility or other demonstrated benefits justify the premium. Add benefits that the quoted unloading line has yet to account for, using a documented cost basis. If the warehouse cannot receive loose cartons, the apparent cheaper option is not a feasible alternative at that destination.
List each charge that changes between proposals, including packing, loading, inland transport, destination handling, pallet exchange or disposal and separately quoted receiving labor. Check whether a change in delivery terms moves a charge to the buyer rather than removing it. Keep uncertain costs visible instead of setting them to zero.
Allocate mixed-order freight to the lines using it
A second issue arises after choosing the shipment method: how much of the shared cost belongs to each order line? Charging every appliance the same amount can obscure a large difference in packed space.
Fictional exercise B uses 400 Model 6003 units and 100 Model 6504S units in full reference cartons and a shared freight pool of 1,200 CU. The exercise allocates cost by outer-carton volume. The packer would still need to approve the layout and weight distribution for an actual mixed shipment.
| Order line | Units / cartons | Total carton volume | Allocated shared cost | Cost per unit |
|---|---|---|---|---|
| 6003 | 400 units / 50 cartons | 6.2608875 m³ | 566.26 CU | 1.416 CU |
| 6504S | 100 units / 100 cartons | 7.007 m³ | 633.74 CU | 6.337 CU |
| Total | 500 units / 150 cartons | 13.2678875 m³ | 1,200.00 CU | 2.400 CU average |
Line share = line’s total outer-carton m³ ÷ total outer-carton m³
Allocated shared cost = line share × shared cost pool
Line cost per unit = allocated shared cost ÷ line units
The 2.400 CU overall average reconciles the total but hides the two different line allowances. For purchasing comparisons, retaining the line result makes the freight effect visible beside the quoted appliance price.
Use this method only for a cost pool you have chosen to allocate by volume. A directly attributable surcharge belongs to its line first. If a charge is based on weight, handling units or another agreed basis, retain that basis. For a palletized shipment, ask the carrier whether it measures the finished pallet envelope or uses another billing basis.
Turn the calculation into a usable booking brief
Send a carton census and a load proposal together. The first accounts for what is being shipped; the second explains how it will move. A useful brief makes open inputs easy to locate without asking the forwarder or warehouse to reconstruct the order from product-page screenshots.
- Identify the quantities. Show each model, saleable-unit quantity, units per outer carton, full cartons and any remainder packs. Include separately packed accessories or stands as their own shipping lines.
- Describe the finished packs. Supply measured external dimensions and gross mass, their measurement basis, permitted orientation and the accepted packing revision. Identify palletized handling units separately from the cartons inside them.
- Connect the load to the route. Name the proposed equipment, actual limits to be checked, loading and securing arrangement, and the receiver’s unloading method. Record who will resolve a change in equipment or pack dimensions before booking.
- Reconcile the commercial comparison. List the included charges, assumed delivered quantity and allocation method. Link each quantity and cost to the same version of the proposal.
For exercise B, record Model 6003 as 400 units in 50 cartons at 8 units per carton. The reference size of 595 × 345 × 610 mm gives 6.2608875 m³. Record the current finished-pack measurements, gross mass, permitted orientation and stacking, load drawing and receiving acceptance when the supplier and receiver confirm them.
Approve the transport pack through the separate packing-trial and release process. If the project changes from complete appliances to component kits, rebuild the carton census and commercial comparison for that configuration. A CBU packing calculation cannot establish CKD carton quantities, assembly costs or a tariff advantage.
For a quotation, send ECOBRIDGE the order mix and receiving requirements with this brief. The useful supplier response is a proposal that reconciles units, cartons, handling units, packing and load assumptions, so the buyer can compare a real delivered option rather than a nominal container number.
Sources and calculation scope
- ECOBRIDGE, Gas Stove catalog 2026-04, original supplier PDF page 4 / printed page 06, Model 6003 packing fields. Page image and extracted text reread 3 November 2026. No public PDF download URL established; request the current revision for an order.
- ECOBRIDGE Model 6504S product page. Reference-carton fields and the example 20GP quantity read from the product page on 4 November 2026.
- Hapag-Lloyd, 20′ Standard. Example capacity, inside and door-opening dimensions; accessed 3 November 2026.
- Hapag-Lloyd, Container Packing, October 2011, sections 3.2–3.3. Selected sections read 3 November 2026.
Volumes, percentages and allocations are calculated from the stated inputs. Use the actual packing and freight records when applying the two fictional exercises to a shipment.