12x6x4 Corrugated Mailers - ECT-32 White Crush Resistant, 50-Pack
$51.41
/ bundle of 50$1.03 per mailer
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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
12" × 6" × 4"
Board / material
ECT-32-B Corrugated
Color
White
Freight class
Class 125
Specifications
| Inside dimensions | 12" × 6" × 4" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | White |
| Sold as | Bundle of 50 |
| Order in multiples of | 50 |
| Bundle weight | 18.02 lb |
| Outer carton (shipping) | 25.0 × 24.75 × 5.75 in |
| LTL freight class | Class 125 |
| GTIN | 841436059589 |
| SKU | M1264 |
About this item
SKU M1264 — 12" × 6" × 4", ECT-32-B Corrugated, White. Sold as a bundle of 50, shipped from US warehouses.
ECT-32-B white corrugated mailers deliver crush-resistant protection with zero assembly required, fold and ship in seconds. Engineered for small parcel logistics, these 12x6x4 one-piece mailers reduce material waste and freight costs while securing fragile items with double-wall front and side protection. Sold as a 50-bundle for volume efficiency.
Ideal for shipping apparel, shoes, books, household goods, and everyday ecommerce orders. A sturdy, reliable choice for small-business, Etsy, and ecommerce shippers.
Common questions
What is ECT-32-B and why does it matter for shipping?
ECT (Edge Crush Test) 32-B corrugated meets ASTM D5169 standards with 32 pounds-per-inch crush strength. This rating ensures your boxes stack safely during warehouse operations and freight transport, reducing damage risk and protecting ROI on shipped goods.
How much assembly labor do I save with fold-and-tuck design?
No tape, glue, staples, or machinery needed, boxes assemble in seconds by hand. For fulfillment operations processing 500+ shipments daily, fold-and-tuck design saves 2, 4 labor hours per shift compared to traditional tape-sealed boxes.
What shipping cost savings should I expect with lightweight corrugated?
ECT-32-B white corrugated weighs approximately 20, 25% less than heavier-grade alternatives while maintaining crush strength. On dimensional weight pricing (DIM), lighter mailers reduce per-unit shipping costs by 10, 15%, with savings multiplying across high-volume monthly shipments.
Can these mailers handle stacking and multi-box orders?
Yes. Double-wall construction on front and sides provides crush resistance for safe stacking in warehouse environments and on delivery trucks. Boxes maintain structural integrity under typical loading conditions, reducing damage claims and customer returns.
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.