6x4x2" Kraft Corrugated Mailers - ECT-32-B Crush Resistant, Bundle of 50
$34.94
/ bundle of 50$0.70 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
6" × 4" × 2"
Board / material
ECT-32-B Corrugated
Color
Kraft
Freight class
Class 125
Specifications
| Inside dimensions | 6" × 4" × 2" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | Kraft |
| Sold as | Bundle of 50 |
| Order in multiples of | 50 |
| Bundle weight | 6.34 lb |
| Outer carton (shipping) | 15.0 × 14.75 × 6.25 in |
| LTL freight class | Class 125 |
| GTIN | 848109008608 |
| SKU | M642K |
About this item
SKU M642K — 6" × 4" × 2", ECT-32-B Corrugated, Kraft. Sold as a bundle of 50, shipped from US warehouses.
The 6x4x2" 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 6" x 4" x 2"; 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 does ECT-32-B mean, and why does it matter for my shipping operations?
ECT (Edge Crush Test) 32 indicates the mailer can withstand 32 pounds of force per inch of edge, ideal for small-parcel shipping of lightweight to mid-weight items. The -B designation confirms double-wall corrugated construction, providing crush resistance and protection during transit while maintaining cost efficiency compared to heavier ECT ratings.
How much can I save on postage with these lightweight mailers?
Kraft corrugated mailers reduce dimensional weight charges by minimizing dead space and unnecessary material bulk compared to rigid boxes. For high-volume shippers, switching to optimized 6 x 4 x 2" mailers can deliver 5-15% postage savings per shipment, compounding to significant annual freight cost reductions across your fulfillment operation.
Can these mailers handle stacking in a warehouse without collapsing?
Yes. ECT-32-B construction is engineered for crush resistance on all edges. When assembled, the double-wall design supports safe stacking of multiple units in storage racks and palletized shipping scenarios, making them ideal for high-density warehouse environments.
How quickly can my team assemble these for packing?
These one-piece fold-and-tuck mailers assemble in seconds with no tape, glue, or staples required. Your packing team can fold and seal each box with minimal motion, increasing throughput and reducing labor time per shipment by 20-30% compared to traditional tape-sealed cartons.
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.