Single Wall vs Double Wall Boxes: What Is the Difference?
Single wall or double wall? Which box type is right for your products.
Key differences
Quick answer
Single wall for items up to 15kg and standard stacking. Double wall for items over 15kg, high stacking, or fragile heavy items. Single wall is lighter (cheaper postage) and adequate for most e-commerce products. Double wall provides significantly more crush and puncture resistance. The cost is 30-50% more per box but justified for heavy or high-value items.
Strength comparison
Two fluted layers vs one.
Three liners vs two.
Under 15kg in standard stacking.
Over-specifying wastes money and adds shipping weight.
Weight: weight limits or grading.
Cost comparison
Double wall costs 30-50% more per box and weighs 40-60% more (affecting shipping). Only specify double wall when single wall cannot provide adequate protection. For the majority of e-commerce shipments, single wall is the cost-effective choice.
Which to choose
Frequently asked questions
Single wall has one fluted layer. Double wall has two. Double is much stronger.
Items over 15kg, high stacking (4+), or fragile heavy items.
30-50% more per box.
For most items under 15kg, yes.
Yes, 40-60% heavier than single wall.
Part of our guide
Product Guide: Single Wall Cardboard Boxes
Expert guides on single wall cardboard boxes for shipping, storage, and e-commerce packaging.
Browse all guides →
