3x3x12" White Corrugated Square Mailing Tubes - 25 Pack
$18.48
/ bundle of 25$0.74 per mailer
Request bulk pricing
Ships from the nearest of 5 US warehouses · freight calculated at checkout
30-day returns on stock items · Return policy
Inside dimensions
3" × 3" × 12"
Board / material
ECT-32-B Corrugated
Color
White
Freight class
Class 125
Specifications
| Inside dimensions | 3" × 3" × 12" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | White |
| Sold as | Bundle of 25 |
| Order in multiples of | 25 |
| Bundle weight | 4.6 lb |
| Outer carton (shipping) | 21.25 × 17.0 × 3.0 in |
| LTL freight class | Class 125 |
| GTIN | 841436089135 |
| SKU | M3312 |
About this item
SKU M3312 — 3" × 3" × 12", ECT-32-B Corrugated, White. Sold as a bundle of 25, shipped from US warehouses.
The 3x3x12" White Corrugated Square Mailing Tubes 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 12"; white material; Bundle 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 documents, framed art, signage, flat goods, and large prints. A sturdy, reliable choice for small-business, Etsy, and ecommerce shippers.
Common questions
Why choose square tubes instead of round mailing tubes?
Square tubes eliminate rolling and shifting during shipping, making them stackable and more efficient to pack. They also maximize shelf space, reduce packing time, and lower damage rates, particularly valuable for high-volume fulfillment operations.
How quickly do these tubes assemble?
These one-piece tubes fold together in seconds without tape, glue, or additional tools. Staff can assemble hundreds per hour, significantly accelerating packing workflows compared to traditional tube assembly methods.
What products fit in a 3 x 3 x 12" tube?
These tubes accommodate rolled posters, prints, blueprints, documents, fabric swatches, cosmetic samples, and cylindrical items up to 3 inches in diameter and 12 inches in length. They're ideal for items requiring protection without excessive bulk.
Are these tubes shipping-compliant and environmentally friendly?
Yes. ECT-32-B corrugated construction meets USPS, UPS, and FedEx specifications for dimensional weight pricing and handling standards. The tubes are 100% recyclable, supporting sustainability goals while meeting carrier requirements.
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.