7x4x4 Kraft Corrugated Mailers - ECT-32-B Crush Resistant, Bundle of 50
$49.73
/ bundle of 50$0.99 per mailer
Request bulk pricing
Ships from the nearest of 5 US warehouses · freight calculated at checkout
30-day returns on stock items · Return policy
Inside dimensions
7" × 4" × 4"
Board / material
ECT-32-B Corrugated
Color
Kraft
Freight class
Class 125
Specifications
| Inside dimensions | 7" × 4" × 4" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | Kraft |
| Sold as | Bundle of 50 |
| Order in multiples of | 50 |
| Bundle weight | 10.28 lb |
| Outer carton (shipping) | 21.0 × 15.75 × 5.5 in |
| LTL freight class | Class 125 |
| GTIN | 841436080934 |
| SKU | M744K |
About this item
SKU M744K — 7" × 4" × 4", ECT-32-B Corrugated, Kraft. Sold as a bundle of 50, shipped from US warehouses.
The 7x4x4 Kraft Corrugated Mailers - ECT-32-B Crush Resistant is a corrugated mailer for books, catalogs, apparel, subscription kits, samples, documents, and small e-commerce orders. Listed specs include inside dimensions 7" x 4" x 4"; kraft material; ECT-32-B; bundle of 50. The mailer format works when the product needs a presentation-style carton or compact shipping box instead of a standard RSC case.
Ideal for shipping apparel, books, mugs, accessories, gifts, and small fragile items. A sturdy, reliable choice for small-business, Etsy, and ecommerce shippers.
Common questions
What is ECT-32-B and why does it matter for my shipping operation?
ECT (Edge Crush Test) measures corrugated strength; 32-B indicates 32 lbs/inch crush resistance with B-flute construction. This rating ensures reliable stacking performance in warehouses and transit, reducing product damage claims and returns while maintaining cost efficiency for mid-weight items.
How much labor time do I save compared to tape-sealed boxes?
The fold-and-tuck design assembles in 2-3 seconds per mailer with zero tape, glue, or staples. For a 500-unit monthly volume, you save approximately 25-30 labor hours versus traditional sealed boxes, reducing fulfillment costs by 15-20%.
Can these mailers handle stacking during storage and transit?
Yes. ECT-32-B corrugated with double-wall construction supports stable stacking up to 15 boxes high under typical warehouse conditions. The crush-resistant design maintains structural integrity across freight and storage cycles, protecting your ROI.
Are these mailers suitable for heavy or bulky products?
These 7x4x4 mailers are optimized for lightweight to mid-weight items (under 10 lbs). For heavier products, we recommend ECT-44 rated boxes or larger dimensions to ensure crush resistance and compliance with freight safety standards.
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.