43x3x3 ECT-32-B White Square Mailing Tubes 25-Pack M3343
$75.71
/ bundle of 25$3.03 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
43" × 43" × 3"
Board / material
ECT-32-B Corrugated
Color
White
Freight class
Class 125
Specifications
| Inside dimensions | 43" × 43" × 3" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | White |
| Sold as | Bundle of 25 |
| Order in multiples of | 25 |
| Bundle weight | 15.74 lb |
| Outer carton (shipping) | 52.5 × 17.25 × 3.0 in |
| LTL freight class | Class 125 |
| SKU | M3343 |
About this item
SKU M3343 — 43" × 43" × 3", ECT-32-B Corrugated, White. Sold as a bundle of 25, shipped from US warehouses.
43x3x3" white mailers in paper stock, packed 25 per pack (SKU M3343); 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 over round mailing tubes?
Square tubes eliminate rolling and shifting during shipping, reducing product damage and packing time. They stack efficiently in boxes and vehicles, lower dimensional weight charges, and pack faster without requiring tape or glue, cutting assembly costs by up to 40%.
What is ECT-32-B corrugated material?
ECT-32-B is an edge crush test rating of 32 pounds per inch, indicating strong stacking strength and durability for protecting contents through multiple handling and transport cycles. It's ideal for heavy documents, rolled materials, and repeated shipping.
How quickly can these tubes be assembled?
No tools, tape, or glue required, simply fold the one-piece design together in seconds. A single worker can assemble 200+ tubes per hour, making bulk shipping operations significantly faster and more cost-effective.
Are these tubes compliant with shipping carrier requirements?
Yes. The 43" length complies with UPS, FedEx, and USPS length restrictions, and ECT-32-B construction meets carrier durability standards for ground and express shipping without additional reinforcement.
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.