6 3/16 x 5 3/8 x 2 1/2 in ECT-32-B White Corrugated Mailers 50/Bundle MRX6XL
$40.24
/ bundle of 50$0.80 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
6 3/16" × 5 3/8" × 2 1/2"
Board / material
ECT-32-B Corrugated
Color
White
Freight class
Class 125
Specifications
| Inside dimensions | 6 3/16" × 5 3/8" × 2 1/2" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | White |
| Sold as | Bundle of 50 |
| Order in multiples of | 50 |
| Bundle weight | 8.5 lb |
| Outer carton (shipping) | 19.0 × 17.75 × 5.5 in |
| LTL freight class | Class 125 |
| SKU | MRX6XL |
About this item
SKU MRX6XL — 6 3/16" × 5 3/8" × 2 1/2", ECT-32-B Corrugated, White. Sold as a bundle of 50, shipped from US warehouses.
6 3/16 x 5 3/8 x 2 1/2" white corrugated mailers in ECT-32-B corrugated board, packed 50 per bundle (SKU MRX6XL); 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 does ECT-32-B mean and why does it matter for my shipping operation?
ECT (Edge Crush Test) 32-B indicates the corrugated material can withstand 32 pounds per inch of edge crush force with a B-flute profile. This mid-range rating provides excellent crush resistance for standard small packages while keeping material costs competitive, ideal for high-volume fulfillment where cost-per-unit directly impacts margins.
How much labor time does the fold-and-tuck design save versus traditional taped boxes?
Operators can assemble and seal these mailers in under 5 seconds with zero consumables (no tape, glue, or staples required). For fulfillment centers processing 500+ boxes daily, this eliminates thousands of dollars in labor and tape costs annually while reducing assembly errors.
Will these mailers meet my freight weight targets for postage optimization?
Yes. ECT-32-B corrugated is engineered to be lightweight without sacrificing protection, meaning your dimensional weight and actual weight stay optimized. The compact 6.19" x 5.38" footprint also qualifies for lower postage tiers with USPS, UPS, and FedEx.
Can I stack these mailers in storage without crushing the contents?
Absolutely. The double-wall crush-resistant construction on the front and sides provides stacking strength when bundled. This allows efficient warehouse stacking up to 8-10 bundles high without damage, maximizing vertical storage and reducing your facility footprint.
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.