3x3x1 ECT-32-B White Corrugated Mailers 50/Bundle M331
$16.71
/ bundle of 50$0.33 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
3" × 3" × 1"
Board / material
ECT-32-B Corrugated
Color
White
Freight class
Class 125
Specifications
| Inside dimensions | 3" × 3" × 1" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | White |
| Sold as | Bundle of 50 |
| Order in multiples of | 50 |
| Bundle weight | 2.36 lb |
| Outer carton (shipping) | 10.0 × 9.75 × 5.0 in |
| LTL freight class | Class 125 |
| SKU | M331 |
About this item
SKU M331 — 3" × 3" × 1", ECT-32-B Corrugated, White. Sold as a bundle of 50, shipped from US warehouses.
3x3x1" white corrugated mailers in ECT-32-B corrugated board, packed 50 per bundle (SKU M331); this is a second listing of the same BOX case stock at the same price.
Sized for shipping and fulfillment work; closes with tape or the built-in flap. Order by the bundle of 50.
Common questions
What is the ECT rating and why does it matter for my operation?
ECT-32-B provides 32 pounds per inch of edge crush strength, ensuring mailers resist crushing during conveyor systems and stacking up to 4, 5 boxes high. This rating is ideal for single-item shipments and protects your product reputation while reducing damage-related chargebacks.
Do these mailers require tape, glue, or staples?
No, the one-piece fold-and-tuck design self-closes securely without adhesives or fasteners. This eliminates assembly time, reduces supply chain complexity, and lowers per-unit packaging costs.
How many mailers fit on a standard pallet and what's my dimensional weight impact?
Approximately 10,000, 12,000 flat mailers per pallet. At 331", these mailers minimize dimensional weight surcharges on parcel carriers, directly improving your last-mile margin on lightweight shipments.
Are these mailers suitable for fragile items and what protection do they offer?
Yes, the double-wall corrugated construction on the front and sides provides crush resistance ideal for fragile, lightweight items like jewelry, electronics, and cosmetics. Combine with appropriate void fill for optimal protection during transit.
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.