Knock down furniture almost always ships more pieces per container than the same item assembled, and for bulky outdoor items the gap is large enough to change your buying decision. But more units per container is not the same as lower landed cost. Once you add assembly labour at the store or at home, packaging cost, hardware, and the returns you get when a customer cannot put the thing together, the two options can land closer than the freight quote suggests. This post walks through the container math with real numbers so you can run it on your own programme.
What KD and assembled actually mean
Knock down, usually written KD, means the piece leaves the factory as flat components with hardware and instructions in the carton. The buyer or the end customer assembles it. Fully assembled means it arrives ready to use, with only minor steps like screwing on legs. There is also a middle option, semi knock down, where the frame is built but the back, top, or arms ship separately.
For outdoor wooden furniture the split usually goes like this. Folding chairs and folding tables are often shipped assembled because they fold flat anyway. Fixed dining chairs, extendable tables, sun loungers, and benches are the pieces where KD makes the biggest difference, because assembled they carry a lot of air.
The container you are actually filling
Most outdoor furniture from Vietnam to Europe moves in a 40 foot high cube. Internal dimensions run about 12.03 m long by 2.35 m wide by 2.59 m high, which is roughly 76 cubic metres of internal space and a maximum payload in the region of 26 tonnes.
Two things matter here. First, you will never load 76 CBM of product. Real loading efficiency for cartoned furniture is typically 80 to 90 percent of internal volume once you allow for carton shapes, stacking limits, and the gaps you cannot fill. Plan around 62 to 68 CBM of cartons in a 40HQ and treat anything above that as a bonus.
Second, wooden garden furniture is a volume cargo, not a weight cargo. You will hit the roof long before you hit 26 tonnes. That means every decision should be measured in CBM per unit, not kilos.
A worked example: an acacia dining chair
Take a stackable acacia dining chair, the sort that goes into a six seat garden set.
| Item | Assembled | Knock down |
|---|---|---|
| Carton size | 60 x 60 x 92 cm | 62 x 60 x 22 cm |
| Carton volume | 0.331 CBM | 0.082 CBM |
| Units per 40HQ at 65 CBM loaded | 196 | 792 |
| Freight per unit at USD 4,300 per container | USD 21.94 | USD 5.43 |
The freight number comes from the Drewry World Container Index, which put Shanghai to Rotterdam at USD 4,287 per 40 foot container in the last week of August 2026. Vietnam origin rates sit in a similar band on the Asia to North Europe trade, though your own contract rate, surcharges, and destination charges will move the figure. Use it as a working number and replace it with your forwarder's quote.
So on freight alone, KD saves about USD 16.50 per chair. On a 792 unit container that is roughly USD 13,000 of shipping cost avoided compared with sending the same 792 chairs in four assembled containers.
Where the KD saving gets eaten
Now the other side of the ledger. Four costs typically move against KD.
Hardware and fittings. A KD chair needs bolts, barrel nuts, washers, an assembly key, and printed instructions. On a chair this is usually a small addition per unit at the FOB level, but it is not zero, and stainless fittings for outdoor use cost more than zinc plated.
Carton and inner protection. Loose components need more corner protection and more foam or paper separation than a solid assembled frame does, or you get scuffed timber on arrival. Some of the material saved on box size comes back as internal packing.
Assembly labour. If you assemble at your distribution centre or in store for display or delivery, count the minutes. A chair that takes eight minutes at a fully loaded labour cost of EUR 25 an hour is EUR 3.33 per piece, which is most of the freight saving gone. If the end customer assembles at home, this cost disappears from your P and L.
Returns and complaints. KD raises the chance of a missing bolt, a mismatched hole, or a customer who gives up. Every retailer sets a different tolerance here, but the cost of one returned garden set wipes out the freight saving on many units.
How to run the comparison on your own product
The test is short. For each SKU, work out four numbers and compare.
- Carton CBM for both packing options, from real carton drawings, not estimates.
- Units per container at 65 CBM loaded, which is CBM divided into 65.
- Freight and destination cost per unit, which is your all in container cost divided by units.
- Added cost per unit for KD, which is hardware plus extra packing plus your own assembly labour if you do it.
If step four is smaller than the freight difference in step three, KD wins. On big bulky items like extendable tables and loungers it wins easily. On small items that already pack flat, such as folding chairs and side tables, the gap is narrow and assembled often makes more sense because it removes assembly risk for no real freight penalty.
Practical points that change the answer
A few things buyers often miss when they run this comparison.
Mixed loading matters more than either option in isolation. Chairs that nest into table cartons, or small items packed into the void above a table, can add several percent to container fill. Ask your supplier for a loading plan by SKU before you fix the order, not after.
Carton dimensions are designed, not fixed. Shaving two centimetres off a carton height sometimes lets you fit another tier in the container. It is worth asking whether the packing can be redrawn around the container rather than around the product.
Pre drilled and pre finished parts make a real difference to KD complaints. If holes are drilled on a jig and every part is sanded and oiled before packing, assembly is fast and the finish is even. If not, the customer sees the difference immediately.
Instructions in the buyer's language, with exploded diagrams and a parts count on the first page, cut support calls more than any other single change to a KD pack.
Frequently Asked Questions
How many CBM can you actually load into a 40HQ container?
Internal capacity is about 76 CBM, but real cartoned furniture loads typically reach 62 to 68 CBM. Plan around 65 CBM and treat anything higher as a good result.
Does KD furniture cost less to make?
Usually not. The timber content is the same, and KD adds hardware, instructions, and often more internal packaging. The saving is in freight and warehouse space, not in the factory.
Which outdoor pieces benefit most from KD?
Extendable dining tables, sun loungers, benches, and fixed frame dining chairs. These carry the most empty space when assembled, so flat packing them frees the most container volume.
Is KD furniture weaker than assembled?
Not if it is engineered for it. Through bolts with barrel nuts into a properly drilled mortise can be as strong as a glued joint, and they can be retightened after a season outdoors, which glued joints cannot. Weak KD is a design and drilling problem, not a property of KD itself.
Should I ask for both options when I request a quote?
Yes. Ask for FOB price, carton dimensions, and units per 40HQ for both packing options on the same SKU. That gives you everything you need to run the comparison yourself in about ten minutes.
About Dai Phuc Hung Thinh Furniture
Dai Phuc Hung Thinh Furniture has been building outdoor wooden furniture since 2003, which makes us one of Vietnam's most experienced garden furniture suppliers. We work in FSC certified acacia and eucalyptus, and we supply furniture retailers across Europe.
Most of what is in this post comes from packing the same items both ways for different buyers and watching how the container fill and the complaint rate change. If you are planning an upcoming season and want a second opinion, we are happy to talk it through. Email us at william@daiphuchungthinh.com or visit daiphuchungthinh.com.vn.