9x4x4 Corrugated Mailers - ECT-32 White Crush Resistant, 50-Pack
$38.50
/ bundle of 50$0.77 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
9" × 4" × 4"
Board / material
ECT-32-B Corrugated
Color
White
Freight class
Class 125
Specifications
| Inside dimensions | 9" × 4" × 4" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | White |
| Sold as | Bundle of 50 |
| Order in multiples of | 50 |
| Bundle weight | 11.76 lb |
| Outer carton (shipping) | 21.0 × 17.75 × 6.0 in |
| LTL freight class | Class 125 |
| GTIN | 812578008445 |
| SKU | M944 |
About this item
SKU M944 — 9" × 4" × 4", ECT-32-B Corrugated, White. Sold as a bundle of 50, shipped from US warehouses.
The 9x4x4 White 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 9" x 4" x 4"; white 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.
Common questions
What is ECT-32-B and why does it matter for my operation?
ECT-32-B (Edge Crush Test) indicates the corrugated can support 32 lbs of pressure per linear inch. This rating ensures boxes won't collapse under stacking weight in warehouses or during transport, protecting merchandise and reducing damage claims that impact your bottom line.
How much time do I save with the fold-and-tuck design?
No tape, glue, or staples means operators assemble boxes in seconds versus 10, 15 seconds per box with traditional taped cartons. At scale, a team shipping 500+ units daily saves 1, 2 labor hours per shift while reducing material waste.
Will these mailers reduce my postage costs?
Yes. At just 9 x 4 x 4 inches with crush-resistant ECT-32-B construction, you maximize dimensional weight efficiency. Lighter-weight corrugated versus solid cardboard lowers per-unit postage, and the compact format qualifies for regional carrier discounts.
Are these mailers stackable in our fulfillment center?
Absolutely. The double-wall construction on front and sides provides crush resistance, allowing safe stacking of filled mailers 4, 6 units high. This design maximizes vertical storage in pick-and-pack zones without damage risk.
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.