In stock SKU M3343

3x3x43 ECT-32-B White Square Mailing Tubes 25-Pack M3343

$71.05 / bundle of 25$2.84 per tube
= 25 tubes · Item subtotal $71.05

Before shipping and tax. Final discounts and total are confirmed in the cart.

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Volume pricing — applied automatically in the cart
Quantity (bundle)Item-subtotal discount
1–2Base item price
3–53% off qualifying item subtotal
6+5% off qualifying item subtotal
Pallet or repeat ordersGet a delivered quote
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Shipping & returns details

Ships from U.S. warehouses. 30-day returns on unopened stock items.

Shipping cost and timing depend on the product, quantity and destination. Parcel or freight service is used as appropriate. Shipping discounts apply only to qualifying orders and rates.

Standard delivery is to street addresses in the contiguous U.S. Eligible returns must be unused and in original packaging; return shipping may apply.

Shipping policyReturn policy

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Inside dimensions 43" × 3" × 3"
Board / material ECT-32-B Corrugated
Color White
Freight class Class 125

From our customers

“The packaging is sturdy, well-made, and looks professional. We’re really pleased with the quality.”

Kerri PorterAmerican Vulkan

“They helped us choose the right packaging for our products and made ordering easy.”

Scott HobbsPackrift customer

“Ordering was easy, everything arrived as described, and we’ll definitely order again.”

Cheryl ChristSimply Home Relocation
Questions before you order?Talk to us

Specifications

Inside dimensions43" × 3" × 3" (L × W × H)
Board / materialECT-32-B Corrugated
ColorWhite
Sold asBundle of 25
Physical units per order increment25 (one bundle)
Bundle weight15.74 lb
Outer carton (shipping)52.5 × 17.25 × 3.0 in
LTL freight classClass 125
SKUM3343

About this item

SKU M3343 — 43" × 3" × 3", ECT-32-B Corrugated, White. Sold as a bundle of 25, shipped from US warehouses.

3x3x43" white mailers in paper stock, packed 25 per pack (SKU M3343).

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.