4x4x3 ECT-32 Kraft Corrugated Shipping Boxes 443
$13.66
/ bundle of 25$0.55 per box
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Secure checkout
| 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" × 3"
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" × 3" (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 | 2.2 lb |
| Outer carton (shipping) | 8.25 × 7.5 × 6.25 in |
| LTL freight class | Class 125 |
| SKU | 443 |
About this item
SKU 443 — 4" × 4" × 3", ECT-32 Single Wall Corrugated, Kraft. Sold as a bundle of 25, shipped from US warehouses.
4x4x3 ECT-32 kraft corrugated shipping boxes. Kraft, not white: the white option is listed separately. For shipping goods, organizing stockrooms, and packing household items. ECT-32 board (32 lb per inch edge crush). Natural kraft finish. Shoppers also call these shipping cartons, corrugated cartons, or mailing boxes.
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 is ECT-32 and why does it matter for my shipping operation?
ECT (Edge Crush Test) 32 indicates the box can withstand 32 pounds of pressure per linear inch when crushed along the edge. This rating ensures safe stacking in warehouses and during transit, preventing product damage while using single-wall construction to reduce packaging costs compared to double-wall alternatives.
How much weight can these 4x4x3 boxes safely hold?
ECT-32 single-wall boxes typically support 15-25 pounds per box depending on contents and stacking height. For exact payload specifications, consult our packaging engineers or test with your specific products to ensure optimal stack performance.
Are these boxes suitable for pallet stacking in high-volume warehouses?
Yes. ECT-32 kraft corrugated is engineered for standard warehouse pallet configurations and provides excellent stacking strength when loaded properly. The compact 3-inch height maximizes pallet utilization while maintaining structural integrity across 4-6 pallet heights.
Do you offer volume discounts or bulk pallet orders for these boxes?
Yes. We offer tiered pricing on bulk orders and full pallet quantities. Contact our B2B sales team for custom quotes on volume purchases, freight consolidation, and subscription pricing for ongoing fulfillment operations.
Order support
Questions on specs or freight?
Send the SKU, quantity, and delivery ZIP and we will confirm specs, availability, and freight before you order.