20x20x20 vs 18x18x18 Boxes
20x20x20 vs 18x18x18 Boxes
Not sure which to pick? Use the Packaging Tools to get a recommendation.
Choose 20x20x20 when your product fits the 20x20x20 interior with room for dunnage. Choose 18x18x18 when you need more interior space at 18x18x18 or a different aspect ratio.
20x20x20 options
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20x20x20 ECT-32 Kraft Corrugated Cube Box - Bundle of 10
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20x20x20" Multi-Depth Corrugated Boxes ECT-32 Kraft - Bundle of 10
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20x20x20 Heavy-Duty ECT-44 Kraft Corrugated Boxes - Bundle of 10
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20x20x20 ECT-44 Heavy-Duty Multi-Depth Corrugated Boxes - Bundle of 10
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20x20x20 ECT-48 Double Wall Corrugated Boxes - Heavy-Duty Shipping, Bundle of 10
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20x20x20 ECT-32 White Corrugated Boxes - Premium Cube Pack of 10
18x18x18 options
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18x18x18" ECT-48 Double Wall Corrugated Boxes - Heavy Duty Kraft, Bundle of 10
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18x18x18" ECT-32 Kraft Corrugated Cube Boxes - Bundle of 20
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18x18x18" Multi-Depth Corrugated Box ECT-32 Kraft - 20 Pack
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18x18x18" ECT-44 Heavy-Duty Kraft Corrugated Boxes - Bundle of 20
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18x18x18" White Corrugated Box ECT-32 Single Wall Bundle 20
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18x18x18 ECT-48 Double Wall Boxes w/ Hand Holes – Bundle of 10
When to use
- Deciding between 20x20x20 and 18x18x18 for a new SKU or packaging refresh.
- Cost, protection, and throughput tradeoffs.
When not to use
- Edge cases where neither option fits — check the related guides.
Frequently asked
What's the difference between 20x20x20 and 18x18x18 boxes?
Size (L x W x H): 20x20x20 is 20x20x20 in; 18x18x18 is 18x18x18 in. Cubic inches: 20x20x20 is 8,000; 18x18x18 is 5,832.
When should I choose 20x20x20 boxes?
20x20x20 boxes are commonly used for Bulky / multi-item shipments.
When should I choose 18x18x18 boxes?
18x18x18 boxes are commonly used for Bulky / multi-item shipments.
How many 20x20x20 vs 18x18x18 boxes does Packrift carry in stock?
Packrift currently has 9 in-stock 20x20x20 boxes SKUs and 10 in-stock 18x18x18 boxes SKUs. Live inventory shows on every product page.