3x3x37 Kraft Square Mailing Tubes 25/Bundle M3337K
$65.58
/ bundle of 25$2.62 per tube
Request bulk pricing
Secure checkout
| Quantity (bundle) | Item-subtotal discount |
|---|---|
| 1–2 | Base item price |
| 3–5 | 3% off qualifying item subtotal |
| 6+ | 5% off qualifying item subtotal |
| Pallet or repeat orders | Get a delivered quote |
Shipping & deliveryCheck cost to your ZIP code
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.
Need a hand? Talk to our team
Inside dimensions
3" × 3" × 37"
Board / material
ECT-32-B Corrugated
Color
Kraft
Freight class
Class 125
From our customers
“The packaging is sturdy, well-made, and looks professional. We’re really pleased with the quality.”
“They helped us choose the right packaging for our products and made ordering easy.”
“Ordering was easy, everything arrived as described, and we’ll definitely order again.”
Questions before you order?Talk to us
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 |
| 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.
3x3x37" kraft mailers in paper stock, packed 25 per bundle (SKU M3337K); 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 25.
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.