7x5x4 Kraft Corrugated Mailers ECT-32-B Crush Resistant - Bundle of 50
$55.10
/ bundle of 50$1.10 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
7" × 5" × 4"
Board / material
ECT-32-B Corrugated
Color
Kraft
Freight class
Class 125
Specifications
| Inside dimensions | 7" × 5" × 4" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | Kraft |
| Sold as | Bundle of 50 |
| Order in multiples of | 50 |
| Bundle weight | 13.3 lb |
| Outer carton (shipping) | 22.75 × 17.75 × 5.75 in |
| LTL freight class | Class 125 |
| GTIN | 848109008677 |
| SKU | M754K |
About this item
SKU M754K — 7" × 5" × 4", ECT-32-B Corrugated, Kraft. Sold as a bundle of 50, shipped from US warehouses.
The 7x5x4 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 5" 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?
ECT (Edge Crush Test) 32-B indicates this corrugated material resists 32 pounds per linear inch of edge pressure. This rating balances durability with cost-efficiency, making it ideal for lightweight-to-medium items. It ensures boxes maintain integrity through handling, storage, and stacking without over-specification.
Do these mailers require assembly time or equipment?
No. These one-piece mailers fold and tuck in seconds without tape, glue, staples, or machinery. Workers simply fold and insert the product, reducing labor costs and accelerating order fulfillment cycles significantly compared to traditional two-piece boxes.
How much space do these save compared to pre-assembled mailers?
Flat-shipped mailers compress to roughly 10-15% of their assembled volume, dramatically reducing warehouse shelving needs and freight charges. A pallet holds 5,000+ flat mailers versus 1,000-1,500 pre-assembled boxes, translating to direct cost savings per unit.
Are kraft corrugated mailers suitable for high-stacking environments?
Yes. ECT-32-B corrugated provides reliable stacking performance for 4-6 boxes high under normal warehouse conditions. This rating supports typical parcel and fulfillment workflows. For heavier or higher-stack requirements, consult our ECT-40 or ECT-48 product lines.
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.