7x6x3" ECT-32 Kraft Corrugated Mailers - Crush Resistant, Bundle of 50
$57.11
/ bundle of 50$1.14 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" × 6" × 3"
Board / material
ECT-32 Single Wall Corrugated
Color
Kraft
Freight class
Class 125
Specifications
| Inside dimensions | 7" × 6" × 3" (L × W × H) |
|---|---|
| Board / material | ECT-32 Single Wall Corrugated |
| Color | Kraft |
| Sold as | Bundle of 50 |
| Order in multiples of | 50 |
| Bundle weight | 11.4 lb |
| Outer carton (shipping) | 22.0 × 20.0 × 6.0 in |
| LTL freight class | Class 125 |
| GTIN | 848109055473 |
| SKU | M763K |
About this item
SKU M763K — 7" × 6" × 3", ECT-32 Single Wall Corrugated, Kraft. Sold as a bundle of 50, shipped from US warehouses.
Common questions
What does ECT-32 mean, and why does it matter for my shipping operation?
ECT (Edge Crush Test) rating of 32 means the corrugated material can withstand 32 pounds of crush force per linear inch. For small parcel operations, ECT-32 provides optimal protection-to-weight balance, keeping postage costs low while safeguarding contents. This is the industry standard for lightweight mailers handling items under 5 pounds.
How much do these mailers reduce assembly labor compared to traditional boxes?
One-piece fold-and-tuck design eliminates the need for tape, glue, or staples. Operators can assemble and seal a mailer in under 5 seconds, reducing labor per unit by approximately 70% compared to tape-and-flap alternatives, which translates to significant cost savings in high-volume fulfillment.
What's the stacking strength of these mailers, and how does that improve warehouse efficiency?
Double-wall construction on front and sides provides stacking performance, allowing up to 6-8 mailers high under normal warehouse conditions. This maximizes pallet utilization and reduces the floor space needed for storage, directly improving inventory turns and freight efficiency.
Are these mailers suitable for both USPS and UPS/FedEx shipping?
Yes. The 7 x 6 x 3" dimensions are optimized for USPS Priority Mail, UPS Ground, and FedEx SmartPost, making them versatile for multi-carrier operations. Lightweight kraft construction also qualifies for dimensional weight reductions on most carriers.
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.