18x18x18 vs 16x16x18 Boxes
18x18x18 and 16x16x18 are close in size, so the right pick comes down to what you ship. The 18x18x18 gives about 68 sq in more usable face (324 vs 256 sq in), so it suits thicker or bundled items; the 16x16x18 ships the same item for less postage when it fits. Packrift stocks both: 6 and 6 SKUs are live below.
18x18x18 vs 16x16x18 Boxes at a glance
| 18x18x18 | 16x16x18 | |
|---|---|---|
| Interior size | 18x18x18 in | 16x16x18 in |
| Best for | larger / bundled items | snug fit, lowest postage |
| Mil options in stock | not listed | not listed |
| Price range | $26.44-$41.65 | $22.38-$37.39 |
| In-stock SKUs | 6 | 6 |
18x18x18 Boxes
| SKU | Product | Dimensions | Spec | Pack | Price | Availability |
|---|---|---|---|---|---|---|
| 181824DPBRP6 | 18x18x24 ECT-32 Corrugated Boxes - 6 Pack Bulk Shipping Cartons | 18 x 18 x 24 | corrugated | 6 | 26.44 | In stock |
| 18186 | 18x18x6 ECT-32 Kraft Corrugated Boxes - Shallow Depth, Bundle of 20 | 18 x 18 x 6 | kraft corrugated | 20 | 34.89 | In stock |
| HD181812DW | 18x18x12 ECT-48 Double Wall Kraft Boxes - Heavy Duty Shipping Cartons (Bundle of 10) | 18 x 18 x 12 | kraft | 10 | 36.98 | In stock |
| MD18186 | 18x18x6" Multi-Depth Corrugated Boxes ECT-32 Kraft - Adjustable (20-Pack) | 18 x 18 x 6 | kraft corrugated | 20 | 39.76 | In stock |
| 181828 | 18x18x28 ECT-32 Kraft Corrugated Boxes - Standard Strength Shipping, Bundle of 10 | 18 x 18 x 28 | kraft corrugated | 10 | 39.78 | In stock |
| 181812 | 18x18x12 ECT-32 Kraft Corrugated Boxes - Bundle of 20 | 18 x 18 x 12 | kraft corrugated | 20 | 41.65 | In stock |
16x16x18 Boxes
| SKU | Product | Dimensions | Spec | Pack | Price | Availability |
|---|---|---|---|---|---|---|
| MD161616 | 16x16x16 Multi-Depth Corrugated Boxes ECT-32 Kraft, 10-Pack | 16 x 16 x 16 | kraft corrugated | 10 | 22.38 | In stock |
| 161626 | 16x16x26 ECT-32 Kraft Corrugated Boxes - Heavy-Duty Shipping, Bundle of 10 | 16 x 16 x 26 | kraft corrugated | 10 | 29.37 | In stock |
| HD161612DW | 16x16x12 ECT-48 Double Wall Kraft Boxes - Heavy-Duty Shipping Cartons, Bundle of 10 | 16 x 16 x 12 | kraft | 10 | 32.33 | In stock |
| 161630 | 16x16x30 ECT-32 Kraft Corrugated Boxes - Bundle of 10 | 16 x 16 x 30 | kraft corrugated | 10 | 32.98 | In stock |
| 16166 | 16x16x6 ECT-32 Kraft Corrugated Boxes - Bundle of 25 | 16 x 16 x 6 | kraft corrugated | 25 | 34.33 | In stock |
| 16164 | 16x16x4 ECT-32 Kraft Corrugated Boxes - Shallow Depth Shipping, Bundle of 25 | 16 x 16 x 4 | kraft corrugated | 25 | 37.39 | In stock |
How to choose
- Measure your item and add room for fold, padding, or label.
- If both fit, the smaller/thinner option ships cheaper; size or gauge up for thick, heavy, or sharp contents.
- Use the bulk quote path for recurring or mixed-SKU orders.
FAQ
- Should I choose 18x18x18 or 16x16x18 Boxes?
- Pick the smallest size / lightest gauge your item fits without forcing the seal. Both are stocked above with live pricing.
- What should I do when a field is not listed?
- Do not infer it. Open the PDP or use the bulk quote path so the order is checked against current catalog data.
Already know the SKU you need? Reorder by SKU.