In stock SKU MTM318

18.25 in ECT-32-B White Corrugated Triangle Mailing Tubes 50/Bundle MTM318

$106.18 / bundle of 50$2.12 per tube
= 50 tubes · Item subtotal $106.18

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 18 1/4" × 18 1/4"
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 dimensions18 1/4" × 18 1/4" (L × W)
Board / materialECT-32-B Corrugated
ColorWhite
Sold asBundle of 50
Physical units per order increment50 (one bundle)
Bundle weight17.34 lb
Outer carton (shipping)28.5 × 23.0 × 5.75 in
LTL freight classClass 125
SKUMTM318

About this item

SKU MTM318 — 18 1/4" × 18 1/4", ECT-32-B Corrugated, White. Sold as a bundle of 50, shipped from US warehouses.

18.25" white mailers in paper stock, packed 50 per bundle (SKU MTM318); 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

Do these tubes require tape or adhesive to close?
No. The one-piece design features integrated locking tabs that securely close without tape, glue, or additional fasteners, saving time and reducing assembly costs.
What makes triangle tubes better than round mailing tubes?
Triangle tubes open along their length for easier packing, reduce dimensional weight shipping charges, pack more efficiently in storage, and minimize product shifting during transit compared to round alternatives.
Is ECT-32-B corrugated suitable for fragile items?
Yes. ECT-32-B (Edge Crush Test 32 pounds per inch) provides strong protection for most shipped items. For extremely fragile goods, consider adding interior cushioning materials.
How do these tubes ship to my facility?
All 50 tubes in your bundle arrive flat-packed, requiring minimal storage space and freight costs. Simply unfold and lock when ready to use, no assembly labor required.

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.