3x3x37 Kraft Square Mailing Tubes 25/Bundle
$69.88
/ bundle of 25$2.80 per tube
Request bulk pricing
| Quantity (bundle) | Item-subtotal discount |
|---|---|
| 1–2 | Base item price |
| 3–5 | 3% off qualifying item subtotal |
| 6+ | 5% off qualifying item subtotal |
In stock · ships within 1 business day from the nearest of 5 US warehouses (IL, PA, TX, GA, CA) · 1–5 business days in transit · freight calculated at checkout · free ground shipping on orders over $99 (parcel rates up to $29.95) and over $500 (up to $120)
30-day returns on stock items · Return policy
Inside dimensions
3" × 3" × 37"
Board / material
ECT-32-B Corrugated
Color
Kraft
Freight class
Class 125
Specifications
| Inside dimensions | 3" × 3" × 37" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | Kraft |
| Sold as | Bundle of 25 |
| Physical units per order increment | 25 (one bundle) |
| Bundle weight | 11.08 lb |
| Outer carton (shipping) | 46.25 × 17.0 × 2.25 in |
| LTL freight class | Class 125 |
| GTIN | 848109043432 |
| SKU | M3337K |
About this item
SKU M3337K — 3" × 3" × 37", ECT-32-B Corrugated, Kraft. Sold as a bundle of 25, shipped from US warehouses.
The 3x3x37" Kraft Square Mailing Tubes - No-Roll Design 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 37"; kraft material; 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.
Common questions
Why choose square tubes over traditional round mailing tubes?
Square tubes eliminate rolling during storage and transport, improving warehouse organization and reducing packing time. They stack efficiently, maximize carton space utilization, and provide protection by preventing product rotation that can damage contents.
How quickly can these tubes be assembled?
Tubes fold together in seconds without requiring tape, glue, or additional fasteners. The one-piece design enables your team to prepare large volumes rapidly, reducing labor costs and accelerating order fulfillment.
What materials does ECT-32-B corrugated kraft protect against?
ECT-32-B (Edge Crush Test 32) kraft corrugated provides excellent puncture and compression resistance, protecting contents from moisture, crushing, and impact during multi-stop shipping routes and warehouse handling.
Are these tubes USPS and UPS compliant?
Yes. These kraft square tubes meet standard carrier requirements for corrugated mailing tubes and can be used with USPS Priority Mail, UPS Ground, and FedEx services when properly sealed and addressed.
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.