4x4x18 Shipping Boxes — ECT-32 Kraft Corrugated, 25-Pack
$26.62
/ bundle of 25$1.06 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
4" × 4" × 18"
Board / material
ECT-32 Single Wall Corrugated
Color
Kraft
Freight class
Class 125
Specifications
| Inside dimensions | 4" × 4" × 18" (L × W × H) |
|---|---|
| Board / material | ECT-32 Single Wall Corrugated |
| Color | Kraft |
| Sold as | Bundle of 25 |
| Order in multiples of | 25 |
| Bundle weight | 7.0 lb |
| Outer carton (shipping) | 22.75 × 8.25 × 8.0 in |
| LTL freight class | Class 125 |
| GTIN | 812578002375 |
| SKU | 4418 |
About this item
SKU 4418 — 4" × 4" × 18", ECT-32 Single Wall Corrugated, Kraft. Sold as a bundle of 25, shipped from US warehouses.
The 4x4x18 ECT-32 Kraft Corrugated Boxes - 25 Pack Bundle is a shallow corrugated shipping box for books, binders, framed prints, catalogs, folded apparel, and other low-profile items. Listed specs include inside dimensions 4" x 4" x 18"; kraft material; ECT-32; bundle of 25. Use it as a shipping carton, mailing box, storage box, or e-commerce shipper when the item fits the listed dimensions.
Ideal for shipping apparel, shoes, books, household goods, and everyday ecommerce orders. A sturdy, reliable choice for small-business, Etsy, and ecommerce shippers.
Ecommerce shipping boxes: Good fit for shipping apparel, shoes, books, household goods, small appliances, warehouse picks, and everyday ecommerce orders. 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 the ECT rating and how does it affect stacking performance?
ECT-32 (Edge Crush Test) single-wall corrugated provides 32 pounds per inch of edge crush resistance. This rating supports reliable stacking in warehouse environments, typically allowing 4 - 6 boxes high under typical fulfillment loads. Actual stacking limits depend on box contents and storage conditions.
Why choose 4x4x18 boxes instead of mailing tubes?
Corrugated boxes offer structural support, faster packing workflows, lower per-unit costs at volume, and better integration with standard pallet systems. They also allow partial-box shipping and easier labeling compared to cylindrical tubes, improving warehouse efficiency.
How many boxes fit per pallet, and what freight savings can I expect?
A standard 4840" pallet typically holds 20 - 25 bundles (500 - 625 boxes), depending on stack height. The tall, narrow profile minimizes dimensional weight penalties on parcel and LTL shipments, directly reducing per-box freight costs on orders with consistent product volumes.
Are these boxes suitable for high-volume e-commerce or B2B wholesale operations?
Yes. ECT-32 kraft construction and end-loading design make these ideal for both high-volume order fulfillment and B2B wholesale shipments. Bulk purchasing in bundles of 25 reduces per-box cost and integrates easily into automated packing lines, supporting operational scale-up without quality trade-offs.
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.