18x18x15 Shipping Boxes — ECT-32 Kraft Corrugated, 20-Pack
$69.13
/ bundle of 20$3.46 per box
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Ships from the nearest of 5 US warehouses · freight calculated at checkout
30-day returns on stock items · Return policy
Inside dimensions
18" × 18" × 15"
Board / material
ECT-32 Single Wall Corrugated
Color
Kraft
Freight class
Class 125
Specifications
| Inside dimensions | 18" × 18" × 15" (L × W × H) |
|---|---|
| Board / material | ECT-32 Single Wall Corrugated |
| Color | Kraft |
| Sold as | Bundle of 20 |
| Order in multiples of | 20 |
| Bundle weight | 34.4 lb |
| Outer carton (shipping) | 36.25 × 33.25 × 6.5 in |
| LTL freight class | Class 125 |
| GTIN | 841436087728 |
| SKU | 181815 |
About this item
SKU 181815 — 18" × 18" × 15", ECT-32 Single Wall Corrugated, Kraft. Sold as a bundle of 20, shipped from US warehouses.
ECT-32 single wall corrugated boxes sized 18 " x 18 " x 15 " deliver reliable mid-duty protection for high-volume shipping and warehouse storage. This bundle of 20 kraft cartons offers strong stacking performance and optimal freight efficiency for fulfillment operations. 100% recyclable kraft corrugated construction.
Ideal for shipping bulky items, moving supplies, large equipment, and bulk fulfillment. A sturdy, reliable choice for small-business, Etsy, and ecommerce shippers.
Large shipping boxes: Good fit for shipping bulky household goods, moving supplies, large equipment, soft goods, and bulk fulfillment. These corrugated boxes help small businesses, ecommerce teams, and warehouse shippers match products to the right box size for everyday fulfillment.
Common questions
What is ECT-32 and why does it matter for my shipping operation?
ECT (Edge Crush Test) 32 measures the corrugated material's ability to resist crushing force, a critical metric for stacking performance in warehouses. ECT-32 single-wall construction is the industry standard for general shipping, balancing protection, cost, and sustainable packaging without unnecessary premium weight.
Can I stack these boxes safely on pallets without risk of crushing?
Yes. ECT-32 kraft corrugated is engineered for reliable stacking in multi-tier pallet configurations typical of 3PL and fulfillment operations. Actual stacking load capacity depends on box contents weight and environmental humidity, consult our packaging specialist for your specific application.
Are these boxes suitable for outdoor or refrigerated storage?
Standard kraft corrugated is designed for dry indoor storage and shipping conditions. For cold chain or high-humidity environments, we recommend upgraded coated or waxed-lined alternatives to prevent material degradation and maintain structural integrity.
What's the per-box cost benefit of buying 20-box bundles?
Bundle purchasing reduces per-unit costs versus retail quantities and minimizes handling touchpoints in your supply chain. For warehouse-scale operations shipping 500+ units monthly, bundled SKUs like this deliver measurable margin improvement and inventory efficiency compared to case-by-case ordering.
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.