3x3x30" White Square Mailing Tubes ECT-32-B Corrugated - 25 Pack
$29.96
/ bundle of 25$1.20 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
3" × 3" × 30"
Board / material
ECT-32-B Corrugated
Color
White
Freight class
Class 125
Specifications
| Inside dimensions | 3" × 3" × 30" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | White |
| Sold as | Bundle of 25 |
| Order in multiples of | 25 |
| Bundle weight | 10.76 lb |
| Outer carton (shipping) | 39.75 × 17.0 × 3.0 in |
| LTL freight class | Class 125 |
| GTIN | 841436037358 |
| SKU | M3330 |
About this item
SKU M3330 — 3" × 3" × 30", ECT-32-B Corrugated, White. Sold as a bundle of 25, shipped from US warehouses.
The 3x3x30" White Square Mailing Tubes ECT-32-B Corrugated is a corrugated mailer for books, catalogs, apparel, subscription kits, samples, documents, and small e-commerce orders. Listed specs include inside dimensions 3" x 3" x 30"; white material; ECT-32-B; bundle of 25. The mailer format works when the product needs a presentation-style carton or compact shipping box instead of a standard RSC case.
Ideal for shipping posters, rods, artwork, banners, lighting, and rolled goods. A sturdy, reliable choice for small-business, Etsy, and ecommerce shippers.
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.
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.