The 3kg and 6kg styrofoam boxes look similar on a shelf, so many buyers aren’t sure which one to take. If you pick one that’s too small, your items won’t fit with enough ice. On the other hand, if you pick one that’s too big, the half-empty box warms up faster. That’s why this guide compares the 3kg vs 6kg styrofoam box, so you can choose the right one the first time.
What’s the difference?
Both are white, food-grade EPS (thermocol) boxes with lids. However, they differ in capacity: the 3kg carries around 3kg of product, while the 6kg carries about twice that.
| 3kg box | 6kg box | |
|---|---|---|
| Best for | Samples, medicine, breast milk, single portions | Small fish or meat orders, delivery runs, family outings |
| Typical buyer | Clinics, labs, mothers, vets | Fish vendors, butcheries, pharmacies, online grocers |
| Carried by | One hand | One person, with both hands when full |
| Room for ice | Enough for a small load | Enough for a load plus generous ice |
| See the product | 3kg box with lid | 6kg styrofoam box |
Who should choose the 3kg box?
Choose the 3kg if what you carry fits in your two hands. For example, that could be sample tubes, a few bottles of milk, one person’s medicine or one meal. Because it’s smaller, it’s lighter and takes less space. In addition, it stays colder, since a small load fills it. To learn more, see what fits in a 3kg styrofoam box.
Who should choose the 6kg box?
On the other hand, choose the 6kg if you carry for sale or for several people. For instance, it suits a vendor’s fish order, a butcher’s delivery, a pharmacy’s cold stock for the day, or food and drinks for a family trip. For more detail, see what fits in a 6kg styrofoam box.
Why the right size matters
A box loses cold through its walls and through the space inside. As a result, a full box stays cold longer than a half-empty one. So a full 3kg box beats a half-empty 6kg box for a small load. Likewise, a full 6kg box beats two crammed 3kg boxes for a bigger load.
How to decide in 30 seconds
- First, put your usual load on a table. If you see just a few items, take the 3kg. However, if it’s a full bag or more, take the 6kg.
- Next, add the ice. If your load plus ice packs won’t fit in a 3kg box, then go for the 6kg.
- Finally, think about growth. If you serve more customers on some days, the 6kg covers both your quiet and busy days.
When neither fits
If you carry more than a 6kg box holds, look at the 10kg styrofoam box instead. Alternatively, compare every option in our styrofoam box sizes guide.
Where to buy both sizes
You’ll find Bioflex Insulation Limited in Industrial Area, Nairobi, open Monday to Saturday, 8am to 5pm. We also deliver across Kenya and East Africa. Better still, you can mix 3kg and 6kg boxes in one order.
Still unsure? Simply send us a photo of what you carry on WhatsApp, and we’ll tell you which size fits.
[WhatsApp us for a quote: 0722664867
Frequently asked questions
Yes. Every box we sell comes with its lid
Yes. You can mix sizes in one order, whether you buy single boxes or in bulk.
For selling fish, the 6kg is usually the better place to start. However, the 3kg suits a single portion you’re taking home
