7 1/8 x 5 x 3 in ECT-32-B White Corrugated Mailers 50-Pack MLR3
$33.60
/ bundle of 50$0.67 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 1/8" × 5" × 3"
Board / material
ECT-32-B Corrugated
Color
White
Freight class
Class 125
Specifications
| Inside dimensions | 7 1/8" × 5" × 3" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | White |
| Sold as | Bundle of 50 |
| Order in multiples of | 50 |
| Bundle weight | 10.14 lb |
| Outer carton (shipping) | 19.75 × 18.0 × 6.0 in |
| LTL freight class | Class 125 |
| SKU | MLR3 |
About this item
SKU MLR3 — 7 1/8" × 5" × 3", ECT-32-B Corrugated, White. Sold as a bundle of 50, shipped from US warehouses.
7 1/8 x 5 x 3" white corrugated mailers in ECT-32-B corrugated board, packed 50 per pack (SKU MLR3); 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 pack of 50.
Common questions
What does ECT-32-B mean, and how does it compare to other corrugated ratings?
ECT-32-B indicates Edge Crush Test rating of 32 lbs/inch, with B-flute corrugation. This mid-range strength is ideal for small package shipping; it balances crush resistance with weight efficiency. Heavier items may require ECT-40 or higher.
Do these mailers require tape or adhesive to seal?
No. The fold-and-tuck design means boxes assemble and seal in seconds with zero additional materials. This reduces labor time and eliminates supply chain dependencies on tape or glue.
How many mailers fit on a pallet, and what's the freight advantage?
At 7 1/8" x 5" x 3", these mailers stack efficiently; 50-unit bundles nest to optimize cubic utilization. The compact footprint reduces dimensional weight surcharges on LTL and parcel shipments, typically saving 8-12% versus larger boxes.
Are these white mailers suitable for branded shipping, and do they offer branding options?
Yes. Oyster white finish provides a clean, professional appearance for direct-to-consumer shipping. Many businesses use these as-is or add custom printed labels/tape for branding without premium tooling costs.
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.