In stock SKU M3330

3x3x30 ECT-32-B White Square Mailing Tubes 25-Pack M3330

$35.09 / bundle of 25$1.40 per tube
= 25 tubes · Item subtotal $35.09

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 3" × 3" × 30"
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 dimensions3" × 3" × 30" (L × W × H)
Board / materialECT-32-B Corrugated
ColorWhite
Sold asBundle of 25
Physical units per order increment25 (one bundle)
Bundle weight10.76 lb
Outer carton (shipping)39.75 × 17.0 × 3.0 in
LTL freight classClass 125
SKUM3330

About this item

SKU M3330 — 3" × 3" × 30", ECT-32-B Corrugated, White. Sold as a bundle of 25, shipped from US warehouses.

3x3x30" white mailers in paper stock, packed 25 per pack (SKU M3330); 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 during transit, reduce packing waste, stack efficiently for storage, and pack faster. They also present a more professional appearance and waste less space in shipping cartons compared to traditional round tubes.
Do these tubes require tape, glue, or adhesive to assemble?
No. These one-piece tubes feature pre-scored folds that allow workers to assemble them by hand in seconds without any tape, glue, or additional supplies, reducing assembly labor and material costs.
What's the crush strength rating and what can these tubes safely ship?
ECT-32-B corrugated provides 32 ECT (Edge Crush Test) strength, suitable for shipping items weighing up to 15-20 lbs depending on content density. They exceed ISTA standards for domestic and light export shipping.
How much storage space do I save with flat-ship design?
Flat-ship tubes reduce storage requirements by approximately 75% compared to pre-assembled tubes. One pallet can store 3,000-5,000 tubes versus 500-1,000 assembled, dramatically lowering warehouse costs and improving inventory turnover.

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Questions on specs or freight?

Send the SKU, quantity, and delivery ZIP and we will confirm specs, availability, and freight before you order.