5x5x12 White Square Mailing Tubes 25-Pack M5512
$53.79
/ bundle of 25$2.15 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
5" × 5" × 12"
Board / material
ECT-32-B Corrugated
Color
White
Freight class
Class 125
Specifications
| Inside dimensions | 5" × 5" × 12" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | White |
| Sold as | Bundle of 25 |
| Order in multiples of | 25 |
| Bundle weight | 7.64 lb |
| Outer carton (shipping) | 26.75 × 25.25 × 2.75 in |
| LTL freight class | Class 125 |
| SKU | M5512 |
About this item
SKU M5512 — 5" × 5" × 12", ECT-32-B Corrugated, White. Sold as a bundle of 25, shipped from US warehouses.
5x5x12" white mailers in paper stock, packed 25 per pack (SKU M5512); 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 25.
Common questions
Why choose square tubes instead of round mailing tubes?
Square tubes prevent rolling during packing and transit, reducing product movement, crushing, and labor time spent securing items. They also stack efficiently on shelves and in vehicles, maximizing space utilization and reducing shipping dimensional weight fees.
How long does assembly take per tube?
Each tube folds and locks in seconds without requiring tape, glue, or tools. Your team can assemble 100+ tubes per hour, significantly accelerating fulfillment operations compared to glued or taped alternatives.
What is ECT-32-B corrugated material?
ECT-32-B (32 ECT = Edge Crush Test) is a medium-duty white corrugated material that provides excellent puncture resistance and compression strength. It meets ISTA and ASTM shipping standards, ensuring compliance with carrier requirements for protected shipments.
Are these tubes compatible with major shipping carriers?
Yes. ECT-32-B construction meets FedEx, UPS, USPS, and DHL dimensional and material requirements. The sturdy corrugated design protects contents through multi-carrier transit while minimizing dimensional weight surcharges due to the compact flat-ship format.
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.