20x12x4 Shipping Boxes — ECT-32 Kraft Corrugated, 25-Pack
$38.03
/ bundle of 25$1.52 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
20" × 12" × 4"
Board / material
ECT-32 Single Wall Corrugated
Color
Kraft
Freight class
Class 125
Specifications
| Inside dimensions | 20" × 12" × 4" (L × W × H) |
|---|---|
| Board / material | ECT-32 Single Wall Corrugated |
| Color | Kraft |
| Sold as | Bundle of 25 |
| Order in multiples of | 25 |
| Bundle weight | 19.08 lb |
| Outer carton (shipping) | 32.0 × 16.5 × 8.0 in |
| LTL freight class | Class 125 |
| GTIN | 841436087797 |
| SKU | 20124 |
About this item
SKU 20124 — 20" × 12" × 4", ECT-32 Single Wall Corrugated, Kraft. Sold as a bundle of 25, shipped from US warehouses.
ECT-32 kraft corrugated boxes sized 20 " x 12 " x 4 " deliver optimal protection for shallow inventory without excess wasted space. Ships flat in bundles of 25 for maximum storage efficiency and freight savings. Ideal for apparel, books, artwork, frames, and mirrors.
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 does ECT-32 mean and why does it matter?
ECT-32 refers to Edge Crush Test rating of 32 pounds per inch, a standard for single-wall corrugated. This provides reliable stacking strength for mid-weight products while maintaining cost efficiency. For shallow boxes like these, ECT-32 delivers optimal protection-to-cost ratio for B2B shipping volumes.
How does the shallow 4-inch depth reduce my freight costs?
Carriers charge based on dimensional weight (length x width x height / 166). The 4-inch depth minimizes cubic footage per shipment, lowering DIM weight charges significantly compared to standard-depth boxes. When multiplied across thousands of monthly shipments, this creates substantial volume savings.
Can these boxes handle stacking in a warehouse environment?
Yes. ECT-32 single-wall construction supports reliable stacking performance typical of retail-weight merchandise. Stack height depends on product weight, but these boxes are engineered for standard warehouse vertical storage of lighter items like apparel and books.
What products work best in a 20x12x4 box?
This size is optimized for apparel, books, magazines, picture frames, artwork, mirrors, and similar shallow merchandise. The dimensions minimize wasted space while providing 960 cubic inches of volume, making it ideal for e-commerce fulfillment where every square inch impacts logistics costs.
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.