9x4x3" ECT-32-B Kraft Corrugated Mailers - Crush Resistant, 50-Pack
$48.78
/ bundle of 50$0.98 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
9" × 4" × 3"
Board / material
ECT-32-B Corrugated
Color
Kraft
Freight class
Class 125
Specifications
| Inside dimensions | 9" × 4" × 3" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | Kraft |
| Sold as | Bundle of 50 |
| Order in multiples of | 50 |
| Bundle weight | 9.4 lb |
| Outer carton (shipping) | 18.0 × 17.75 × 6.0 in |
| LTL freight class | Class 125 |
| GTIN | 848109008721 |
| SKU | M943K |
About this item
SKU M943K — 9" × 4" × 3", ECT-32-B Corrugated, Kraft. Sold as a bundle of 50, shipped from US warehouses.
Common questions
What is ECT-32-B and why does it matter for my shipping operation?
ECT (Edgewise Crush Test) 32-B indicates the corrugated material can withstand 32 lbs of crushing force per linear inch. This mid-range rating balances protection and cost-efficiency, making it ideal for lightweight fragile goods without the premium expense of heavier ECT ratings. It meets industry standards for safe parcel transit.
How much labor time do I save with fold-and-tuck assembly versus tape-sealed boxes?
One-piece mailers fold together in seconds with zero assembly materials needed. Compared to tape-sealed corrugated boxes, you eliminate picking tape, glue application, and staple fastening, saving 8-12 seconds per box. At scale (1,000+ boxes/day), this translates to 2-4 hours of daily labor savings and reduced consumable costs.
Can these mailers handle stacking during storage and transit?
Yes. The double-wall construction on front and sides provides crush resistance suitable for moderate stacking (3-5 boxes high when flat-packed or 2-3 units high when assembled). For heavy-duty stacking scenarios, consider ECT-44 ratings. Check your freight density and weight distribution with our fulfillment specialists.
What's the per-unit cost advantage of buying in 50-unit bundles versus smaller quantities?
Bundle pricing on 50-unit packs reduces per-box cost by 15-22% compared to smaller quantities, and shipping flat cuts freight costs by up to 40% versus pre-assembled mailers. For high-volume shippers, volume tier discounts (250+ units) unlock additional 8-12% savings. Request a custom quote for your monthly volume.
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.