4x4x20 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack 4420
$28.70
/ bundle of 25$1.15 per box
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| Quantity (bundle) | Item-subtotal discount |
|---|---|
| 1–2 | Base item price |
| 3–5 | 3% off qualifying item subtotal |
| 6+ | 5% off qualifying item subtotal |
| Pallet or repeat orders | Get a delivered quote |
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Shipping & returns details
Ships from U.S. warehouses. 30-day returns on unopened stock items.
Shipping cost and timing depend on the product, quantity and destination. Parcel or freight service is used as appropriate. Shipping discounts apply only to qualifying orders and rates.
Standard delivery is to street addresses in the contiguous U.S. Eligible returns must be unused and in original packaging; return shipping may apply.
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Inside dimensions
4" × 4" × 20"
Board / material
ECT-32 Single Wall Corrugated
Color
Kraft
Freight class
Class 125
From our customers
“The packaging is sturdy, well-made, and looks professional. We’re really pleased with the quality.”
“They helped us choose the right packaging for our products and made ordering easy.”
“Ordering was easy, everything arrived as described, and we’ll definitely order again.”
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Specifications
| Inside dimensions | 4" × 4" × 20" (L × W × H) |
|---|---|
| Board / material | ECT-32 Single Wall Corrugated |
| Color | Kraft |
| Sold as | Bundle of 25 |
| Physical units per order increment | 25 (one bundle) |
| Bundle weight | 7.84 lb |
| Outer carton (shipping) | 24.5 × 9.0 × 8.75 in |
| LTL freight class | Class 125 |
| SKU | 4420 |
About this item
SKU 4420 — 4" × 4" × 20", ECT-32 Single Wall Corrugated, Kraft. Sold as a bundle of 25, shipped from US warehouses.
4x4x20 ECT-32 kraft corrugated shipping boxes 25-Pack. ECT-32 board (32 lb per inch edge crush). Natural kraft finish. For shipping goods, organizing stockrooms, and packing household items. Also called shipping cartons, corrugated cartons, or mailing boxes. Sold as a 25-pack (25 boxes per pack). Fits everyday shipping and storage jobs across warehouses and small businesses.
Compare nearby options
Larger, smaller and stronger options from the same family. Prices shown are current case prices; freight is calculated at checkout.
Common questions
What does ECT-32 mean, and why does it matter for my warehouse?
ECT-32 refers to Edge Crush Test rating of 32 pounds per linear inch. This indicates strong compressive strength, ensuring boxes withstand stacking pressure and protect contents during transport and warehouse storage without crushing or delaminating.
Can these boxes replace mailing tubes for long items?
Yes. The 4 x 4 x 20" dimension accommodates rolled documents, posters, and tubes while offering more protection and easier sealing than traditional mailing tubes. The rigid corrugated walls prevent denting and crushing during transit.
How does the tall profile improve freight efficiency?
Vertical boxes reduce overall pallet height for the same unit volume, lowering dimensional weight charges on LTL shipments and parcel carriers. This directly reduces shipping costs per unit when moving multiple boxes to a single destination.
What's the best way to stack and store these boxes before use?
Store flat boxes in a dry, climate-controlled environment away from moisture. Stack bundles horizontally on pallets up to 4 - 5 high to prevent edge damage. Keep away from heat sources and direct sunlight to maintain material integrity and structural performance.
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Questions on specs or freight?
Send the SKU, quantity, and delivery ZIP and we will confirm specs, availability, and freight before you order.