18x18x12 ECT-44 Kraft Heavy-Duty Corrugated Shipping Boxes 25-Pack HD181812
$93.75
/ bundle of 25$3.75 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
18" × 18" × 12"
Board / material
ECT-44 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 | 18" × 18" × 12" (L × W × H) |
|---|---|
| Board / material | ECT-44 Single Wall Corrugated |
| Color | Kraft |
| Sold as | Bundle of 25 |
| Physical units per order increment | 25 (one bundle) |
| Bundle weight | 48.83 lb |
| Outer carton (shipping) | 36.5 × 30.5 × 8.5 in |
| LTL freight class | Class 125 |
| SKU | HD181812 |
About this item
SKU HD181812 — 18" × 18" × 12", ECT-44 Single Wall Corrugated, Kraft. Sold as a bundle of 25, shipped from US warehouses.
18x18x12 ECT-44 kraft heavy-duty corrugated shipping boxes 25-Pack. A stock carton for warehouses, online sellers, and shipping departments. ECT-44 rated corrugated board. Natural kraft finish. Also known as shipping cartons, corrugated cartons, or mailing boxes. Pack of 25 (25-pack). This is the 25-count bulk listing; a smaller 10-count option is listed separately.
Compare nearby options
Larger, smaller and stronger options from the same family. Prices shown are current case prices; freight is calculated at checkout.
Larger size
20x20x12 ECT-44 Kraft Heavy-Duty Corrugated Shipping Boxes 10-Pack
$50.43
Smaller size
17.25x11.25x12 ECT-44 Kraft Heavy-Duty Corrugated Shipping Boxes 25-Pack
$60.76
Stronger option
18x18x12 ECT-48 Kraft Double Wall Corrugated Boxes 10-Pack
$46.08
Same size, different spec
18x18x12 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 20-Pack
$60.86
Common questions
What does ECT-44 rating mean, and how does it affect stacking performance?
ECT-44 (Edge Crush Test) measures the amount of force per inch of box edge required to crush the corrugated material, in this case, 44 pounds per linear inch. This rating allows safe vertical stacking of up to 6 boxes without risk of compression failure, maximizing pallet density while protecting contents during storage and transit.
How much stronger is this box compared to standard shipping containers?
These heavy-duty boxes are 40% stronger than standard single wall corrugated, delivering edge crush strength and burst resistance. This increased durability reduces damage claims, decreases product loss, and lowers total cost of ownership across your fulfillment operations.
Can I safely stack multiple pallets of these boxes on top of each other?
Yes. With ECT-44 rating and heavy-duty kraft construction, these boxes safely support stacking up to 6 layers high when properly distributed. This enables efficient use of vertical warehouse space and increases your pallet density for improved freight economics.
Are these boxes environmentally compliant and recyclable?
Completely. These kraft corrugated boxes are 100% recyclable and compostable, supporting your sustainability commitments and meeting ESG requirements for eco-conscious customers and retailers.
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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.