18.25 in ECT-32-B White Corrugated Triangle Mailing Tubes 50/Bundle MTM318
$113.14
/ bundle of 50$2.26 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
18 1/4" × 18 1/4"
Board / material
ECT-32-B Corrugated
Color
White
Freight class
Class 125
Specifications
| Inside dimensions | 18 1/4" × 18 1/4" (L × W) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | White |
| Sold as | Bundle of 50 |
| Order in multiples of | 50 |
| Bundle weight | 17.34 lb |
| Outer carton (shipping) | 28.5 × 23.0 × 5.75 in |
| LTL freight class | Class 125 |
| SKU | MTM318 |
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.