Boxes & Mailers

SELECTION EXPERT ADVICE

Wall Strength & Load Capacity
MORE INFO
Match single-, double-, or triple-wall corrugated construction to your product weight to prevent in-transit damage and minimize costly returns.
Dimensional Weight Cost Control
MORE INFO
Right-sized boxes cut carrier DIM weight charges, selecting the optimal LxWxH for each SKU directly lowers your per-shipment freight cost.
Mailer Box vs. RSC: Choose Correctly
MORE INFO
Self-locking mailer boxes suit branded DTC shipments; traditional RSC corrugated boxes are ideal for palletized B2B and high-volume fulfillment.

Need help choosing boxes?

Pick the right corrugated box without overpaying for size or strength

Use these buying guides to size your box, compare board strength, and avoid dimensional weight surcharges.

Overview

3,094 corrugated boxes, literature mailers and mailing tubes from 2 to 36 inches, mostly ECT-32 kraft and white, sold in bundles of 10 to 50. Each listing shows inside dimensions, board grade and bundle count so you can match a carton to the part you ship. Orders ship from five US regional warehouses; for mixed or recurring orders use the bulk quote path with SKU, quantity and destination ZIP.

Related collections

IN STOCK 12.5x20x4 Kraft TerraBoard Expansion Mailers
Envelopes & Mailers

12.5x20x4 Kraft TerraBoard Expansion Mailers

PN: TM12204

20 x 12.5 x 4 in
$233.83 / CASE
IN STOCK 12.5x19 Kraft TerraBoard Flat Mailers
Envelopes & Mailers

12.5x19 Kraft TerraBoard Flat Mailers

PN: TM1219

19 x 12.5 in
$223.43 / CASE
IN STOCK 12.5x15 Kraft TerraBoard Flat Mailers
Envelopes & Mailers

12.5x15 Kraft TerraBoard Flat Mailers

PN: TM1215

15 x 12.5 in
$182.95 / CASE
IN STOCK 10.5x19x4 Kraft TerraBoard Expansion Mailers
Envelopes & Mailers

10.5x19x4 Kraft TerraBoard Expansion Mailers

PN: TM10194

19 x 10.5 x 4 in
$210.13 / CASE
IN STOCK 10.5x16 Kraft TerraBoard Flat Mailers
Envelopes & Mailers

10.5x16 Kraft TerraBoard Flat Mailers

PN: TM1016

16 x 10.5 in
$186.28 / CASE
IN STOCK 10x13 Kraft TerraBoard Flat Mailers
Envelopes & Mailers

10x13 Kraft TerraBoard Flat Mailers

PN: TM1013

13 x 10 in
$146.03 / CASE
IN STOCK 4x36 Kraft Crimped End Mailing Tubes 15/Case
Mailing Tubes

4x36 Kraft Crimped End Mailing Tubes 15/Case

PN: S4036K

36 in 15 PER CASE
$61.13 / CASE
IN STOCK 4x30 Kraft Crimped End Mailing Tubes 15/Case
Mailing Tubes

4x30 Kraft Crimped End Mailing Tubes 15/Case

PN: S4030K

30 in 15 PER CASE
$54.00 / CASE
IN STOCK 4x24 Kraft Crimped End Mailing Tubes 15/Case
Mailing Tubes

4x24 Kraft Crimped End Mailing Tubes 15/Case

PN: S4024K

24 in 15 PER CASE
$47.03 / CASE
IN STOCK 4x18 Kraft Crimped End Mailing Tubes 15/Case
Mailing Tubes

4x18 Kraft Crimped End Mailing Tubes 15/Case

PN: S4018K

18 in 15 PER CASE
$38.10 / CASE
IN STOCK 4x15 Kraft Crimped End Mailing Tubes 15/Case
Mailing Tubes

4x15 Kraft Crimped End Mailing Tubes 15/Case

PN: S4015K

15 in 15 PER CASE
$37.62 / CASE
IN STOCK 4x12 Kraft Crimped End Mailing Tubes 15/Case
Mailing Tubes

4x12 Kraft Crimped End Mailing Tubes 15/Case

PN: S4012K

12 in 15 PER CASE
$32.27 / CASE
IN STOCK 3x48 Kraft Crimped End Mailing Tubes 24/Case
Mailing Tubes

3x48 Kraft Crimped End Mailing Tubes 24/Case

PN: S3048K

48 in 24 PER CASE
$85.10 / CASE
IN STOCK 3x42 Kraft Crimped End Mailing Tubes 24/Case
Mailing Tubes

3x42 Kraft Crimped End Mailing Tubes 24/Case

PN: S3042K

42 in 24 PER CASE
$75.24 / CASE
IN STOCK 3x30 Kraft Crimped End Mailing Tubes 24/Case
Mailing Tubes

3x30 Kraft Crimped End Mailing Tubes 24/Case

PN: S3030K

30 in 24 PER CASE
$51.90 / CASE
IN STOCK 3x36 Kraft Crimped End Mailing Tubes 24/Case
Mailing Tubes

3x36 Kraft Crimped End Mailing Tubes 24/Case

PN: S3036K

36 in 24 PER CASE
$60.71 / CASE

Product Help Request

Send the SKU, quantity, delivery ZIP, and any required specs so we can route the request.

Buying path

Buy Boxes & Mailers by the specs that change the order

Use filters, product titles, and product pages to compare size, material, pack count, case quantity, and fit before ordering.

Compare

Use filters and product titles to narrow by the specs that affect fit.

Confirm

Open the product page before ordering a case so you can check quantity, unit, and limits.

Reorder

Save the SKU or product link for repeat purchasing and support questions.

Larger orders

For pallet, recurring, or mixed-SKU needs, send support the details before placing a large order.

What to check first

  • Inside dimensions
  • Board grade or strength rating
  • Box style and closure
  • Case or bundle quantity
Common wrong-order risk: Choosing the outside size instead of the inside size. Confirm product fit, void fill, and storage space before ordering.