Mailer Boxes

SELECTION EXPERT ADVICE

Self-Locking vs Tape-Seal Mailer Formats
MORE INFO
Self-locking mailer boxes close without tape using interlocking tabs, which speeds up packing on high-volume lines and creates a cleaner, more professional appearance. Tape-sealed formats allow more flexibility in fill height and can handle slightly oversized contents that exceed the box depth without a visible gap at the closure.
Size Selection for Common Product Categories
MORE INFO
Literature mailers suit flat, rigid items like books, catalogs, and framed prints. Garment mailers handle folded clothing and accessories efficiently. Multimedia mailers are sized for CDs, DVDs, and gaming cartridges. Choosing the right format for your specific product eliminates wasted space and reduces the cushioning material needed to fill the gap.
Mailer Boxes for Branded DTC Packaging
MORE INFO
Branded mailer boxes with consistent dimensions create a repeatable unboxing experience that can be photographed, shared, and recognized as part of your brand identity. Standardizing on one or two mailer sizes across your product line simplifies procurement, reduces pack station training time, and lowers your per-unit packaging cost.

Need help choosing a mailer box?

Decide between a mailer box and a poly or bubble mailer

Use these buying guides to choose the right format for your product weight, protection level, and unboxing experience.

Mailers Guide → Poly vs bubble vs rigid mailers Mailer vs Box Selector → When a mailer is enough and when you need a box
Overview

644 corrugated mailer boxes from 4 to 30 inches: white and kraft literature mailers, self-seal tab-lock and ECT-32 styles in packs of 10, 25 and 50. Inside dimensions and board grade are listed on each box. 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

Buying path

Buy Mailer Boxes 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.
Use the box size calculator -> Contact support for larger orders -> Compare corrugated box types -> View products below ->
IN STOCK 5x5x4 ECT-32-B White Corrugated Mailers 50/Bundle M554 - alias listing
Boxes - Mailers

5x5x4 ECT-32-B White Corrugated Mailers 50/Bundle M554

PN: M554

5 x 5 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$39.50 / BUNDLE
IN STOCK 5x5x2 ECT-32-B White Corrugated Mailers 50/Bundle M552 - alias listing
Boxes - Mailers

5x5x2 ECT-32-B White Corrugated Mailers 50/Bundle M552

PN: M552

5 x 5 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$48.61 / BUNDLE
IN STOCK 5x5x1 ECT-32 White Corrugated Mailers 50/Bundle M551 - alias listing
Boxes - Mailers

5x5x1 ECT-32 White Corrugated Mailers 50/Bundle M551

PN: M551

5 x 5 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$45.57 / BUNDLE
IN STOCK 5x4x4 ECT-32-B White One-Piece Corrugated Mailers 50/Bundle M544 - alias listing
Boxes - Mailers

5x4x4 ECT-32-B White One-Piece Corrugated Mailers 50/Bundle M544

PN: M544

5 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$35.21 / BUNDLE
IN STOCK 5x4x2 ECT-32 White Corrugated Mailers 50-Pack M542 - alias listing
Boxes - Mailers

5x4x2 ECT-32 White Corrugated Mailers 50-Pack M542

PN: M542

5 x 4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$25.26 / BUNDLE
IN STOCK 5x3x5 ECT-32-B White Corrugated Mailers 50/Bundle M535 - alias listing
Boxes - Mailers

5x3x5 ECT-32-B White Corrugated Mailers 50/Bundle M535

PN: M535

5 x 3 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$43.22 / BUNDLE
IN STOCK 5x3x3 ECT-32 White Corrugated Mailers 50-Pack M533 - alias listing
Boxes - Mailers

5x3x3 ECT-32 White Corrugated Mailers 50-Pack M533

PN: M533

5 x 3 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$20.37 / BUNDLE
IN STOCK 5x3x1 ECT-32-B White Corrugated Mailers 50-Pack M531 - alias listing
Boxes - Mailers

5x3x1 ECT-32-B White Corrugated Mailers 50-Pack M531

PN: M531

5 x 3 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$25.83 / BUNDLE
IN STOCK 5x2x2 ECT-32-B White Corrugated Mailers 50-Pack M522 - alias listing
Boxes - Mailers

5x2x2 ECT-32-B White Corrugated Mailers 50-Pack M522

PN: M522

5 x 2 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$13.36 / BUNDLE
IN STOCK 4.375x4.375x3.5 ECT-32 White Corrugated Mailers 50-Pack MLR2 - alias listing
Boxes - Mailers

4.375x4.375x3.5 ECT-32 White Corrugated Mailers 50-Pack MLR2

PN: MLR2

4 3/8 x 4 3/8 x 3 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$28.10 / BUNDLE
IN STOCK 4 3/8 x 4 3/8 x 2 in ECT-32 White Corrugated Mailers 50-Pack MLR1 - alias listing
Boxes - Mailers

4 3/8 x 4 3/8 x 2 in ECT-32 White Corrugated Mailers 50-Pack MLR1

PN: MLR1

4 3/8 x 4 3/8 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$26.58 / BUNDLE
IN STOCK 4 3/8 x 4 3/8 x 2 1/2 in ECT-32 White Corrugated Mailers 50/Bundle MLR5 - alias listing
Boxes - Mailers

4 3/8 x 4 3/8 x 2 1/2 in ECT-32 White Corrugated Mailers 50/Bundle MLR5

PN: MLR5

4 3/8 x 4 3/8 x 2 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$26.58 / BUNDLE
IN STOCK 4x4x4 ECT-32-B White Corrugated Mailers 50/Bundle M444 - alias listing
Boxes - Mailers

4x4x4 ECT-32-B White Corrugated Mailers 50/Bundle M444

PN: M444

4 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$28.89 / BUNDLE
IN STOCK 4x4x3 ECT-32 White Corrugated Mailers 50-Pack M443 - alias listing
Boxes - Mailers

4x4x3 ECT-32 White Corrugated Mailers 50-Pack M443

PN: M443

4 x 4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$25.58 / BUNDLE
IN STOCK 4x4x2 ECT-32-B White Corrugated Mailers 50/Bundle M442 - alias listing
Boxes - Mailers

4x4x2 ECT-32-B White Corrugated Mailers 50/Bundle M442

PN: M442

4 x 4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$20.90 / BUNDLE
IN STOCK 4x3x2 ECT-32-B White Corrugated Mailers 50/Bundle M432 - alias listing
Boxes - Mailers

4x3x2 ECT-32-B White Corrugated Mailers 50/Bundle M432

PN: M432

4 x 3 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$17.38 / BUNDLE
IN STOCK 4x2x2 ECT-32-B White Corrugated Mailers 50-Pack M422 - alias listing
Boxes - Mailers

4x2x2 ECT-32-B White Corrugated Mailers 50-Pack M422

PN: M422

4 x 2 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$13.84 / BUNDLE
IN STOCK 4x3x1 ECT-32-B White Corrugated Mailers 50/Bundle M431 - alias listing
Boxes - Mailers

4x3x1 ECT-32-B White Corrugated Mailers 50/Bundle M431

PN: M431

4 x 3 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$23.55 / BUNDLE
IN STOCK 3x3x1 ECT-32-B White Corrugated Mailers 50/Bundle M331 - alias listing
Boxes - Mailers

3x3x1 ECT-32-B White Corrugated Mailers 50/Bundle M331

PN: M331

3 x 3 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$16.71 / BUNDLE
IN STOCK 3x3x3 ECT-32 White Corrugated Mailers 50-Pack M333 - alias listing
Boxes - Mailers

3x3x3 ECT-32 White Corrugated Mailers 50-Pack M333

PN: M333

3 x 3 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$18.90 / BUNDLE
IN STOCK 3x3x2 ECT-32 White Corrugated Mailers 50-Pack M332 - alias listing
Boxes - Mailers

3x3x2 ECT-32 White Corrugated Mailers 50-Pack M332

PN: M332

3 x 3 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$16.33 / BUNDLE
IN STOCK 8.5x7.625x2.0625 ECT-32-B White Corrugated Video Tape Mailers 20/Bundle MVM4 - alias listing
Boxes - Mailers

8.5x7.625x2.0625 ECT-32-B White Corrugated Video Tape Mailers 20/Bundle MVM4

PN: MVM4

8 1/2 x 7.625 x 2 1/16 in ECT-32-B Corrugated 20 PER BUNDLE
$39.80 / BUNDLE
IN STOCK 3x2x2 ECT-32 White One-Piece Corrugated Mailers 50-Pack M322 - alias listing
Boxes - Mailers

3x2x2 ECT-32 White One-Piece Corrugated Mailers 50-Pack M322

PN: M322

3 x 2 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$12.91 / BUNDLE
IN STOCK 5.75x5.06x1.75 White Self-Seal Corrugated CD Mailers 200-Pack MM1002 - alias listing
Boxes - Mailers

5.75x5.06x1.75 White Self-Seal Corrugated CD Mailers 200-Pack MM1002

PN: MM1002

5 3/4 x 5.06 x 1 3/4 in ECT-32-B Corrugated 200 PER BUNDLE
$232.05 / BUNDLE
IN STOCK 11.75x7.25x4.75 ECT-32 White Corrugated Tuck Mailers 25/Bundle MEZ1174 - alias listing
Boxes - Mailers

11.75x7.25x4.75 ECT-32 White Corrugated Tuck Mailers 25/Bundle MEZ1174

PN: MEZ1174

11 3/4 x 7.25 x 4 3/4 in ECT-32-B Corrugated 25 PER BUNDLE
$48.23 / BUNDLE
IN STOCK 9.5x8x8 ECT-32-B White Corrugated Tuck Mailers 25/Bundle MEZ988 - alias listing
Boxes - Mailers

9.5x8x8 ECT-32-B White Corrugated Tuck Mailers 25/Bundle MEZ988

PN: MEZ988

9 1/2 x 8 x 8 in ECT-32-B Corrugated 25 PER BUNDLE
$64.08 / BUNDLE
IN STOCK 10 5/16 x 5 x 5 9/16 in White Corrugated Outside Tuck Mailers 50/Bundle MEZ1055 - alias listing
Boxes - Mailers

10 5/16 x 5 x 5 9/16 in White Corrugated Outside Tuck Mailers 50/Bundle MEZ1055

PN: MEZ1055

10 5/16 x 5 x 5 9/16 in ECT-32-B Corrugated 50 PER BUNDLE
$73.68 / BUNDLE
IN STOCK 7 5/8 x 5 7/16 x 3 9/16 in ECT-32-B White Outside Tuck Mailers 25-Pack MEZ753 - alias listing
Boxes - Mailers

7 5/8 x 5 7/16 x 3 9/16 in ECT-32-B White Outside Tuck Mailers 25-Pack MEZ753

PN: MEZ753

7 5/8 x 5 7/16 x 3 9/16 in ECT-32-B Corrugated 25 PER BUNDLE
$39.50 / BUNDLE
IN STOCK 5 5/8 x 4 3/16 x 5 in White Corrugated Outside Tuck Mailer 50/Bundle MEZ545 - alias listing
Boxes - Mailers

5 5/8 x 4 3/16 x 5 in White Corrugated Outside Tuck Mailer 50/Bundle MEZ545

PN: MEZ545

5 5/8 x 4 3/16 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$45.57 / BUNDLE
IN STOCK 18x12x3 Kraft Self-Seal Literature Mailers 50-Pack ML18123K - alias listing
Boxes - Mailers

18x12x3 Kraft Self-Seal Literature Mailers 25-Pack ML18123K

PN: ML18123K

18 x 12 x 3 in ECT-32-B Corrugated 25 PER BUNDLE
$63.23 / BUNDLE
IN STOCK 16x16x2 Kraft Self-Seal Corrugated Literature Mailers 50/Bundle ML16162K - alias listing
Boxes - Mailers

16x16x2 Kraft Self-Seal Corrugated Literature Mailers 50/Bundle ML16162K

PN: ML16162K

16 x 16 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$113.93 / BUNDLE
IN STOCK 17x11x2.5 Kraft Self-Seal Corrugated Literature Mailers 25/Bundle ML17112K - alias listing
Boxes - Mailers

17x11x2.5 Kraft Self-Seal Corrugated Literature Mailers 25/Bundle ML17112K

PN: ML17112K

17 x 11 x 2 1/2 in ECT-32-B Corrugated 25 PER BUNDLE
$50.51 / BUNDLE
IN STOCK 16x12x4 Kraft Self-Seal Corrugated Literature Mailers 50-Pack ML16124K - alias listing
Boxes - Mailers

16x12x4 Kraft Self-Seal Corrugated Literature Mailers 50-Pack ML16124K

PN: ML16124K

16 x 12 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$125.33 / BUNDLE
IN STOCK 15 1/8 x 11 1/8 x 4 in Kraft Literature Mailers Crush Resistant 50/Bundle MIBMS1000K - alias listing
Boxes - Mailers

15 1/8 x 11 1/8 x 4 in Kraft Literature Mailers Crush Resistant 50/Bundle MIBMS1000K

PN: MIBMS1000K

15 1/8 x 11 1/8 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$104.82 / BUNDLE
IN STOCK 15 1/8 x 11 1/8 x 3 in Kraft Literature Mailers Self-Seal 50/Bundle M15113K - alias listing
Boxes - Mailers

15 1/8 x 11 1/8 x 3 in Kraft Literature Mailers Self-Seal 50/Bundle M15113K

PN: M15113K

15 1/8 x 11 1/8 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$99.50 / BUNDLE
IN STOCK 14x14x2 Kraft Self-Seal Corrugated Literature Mailers 50-Pack M14142K - alias listing
Boxes - Mailers

14x14x2 Kraft Self-Seal Corrugated Literature Mailers 50-Pack M14142K

PN: M14142K

14 x 14 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$96.46 / BUNDLE
IN STOCK 14x10x2 Kraft Self-Seal Corrugated Literature Mailers 50-Pack ML14102K - alias listing
Boxes - Mailers

14x10x2 Kraft Self-Seal Corrugated Literature Mailers 50-Pack ML14102K

PN: ML14102K

14 x 10 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$91.15 / BUNDLE
IN STOCK 13x13x3 Kraft Corrugated Literature Mailers 50-Pack ML13133K - alias listing
Boxes - Mailers

13x13x3 Kraft Corrugated Literature Mailers 50-Pack ML13133K

PN: ML13133K

13 x 13 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$101.78 / BUNDLE
IN STOCK 13x13x2 Kraft Corrugated Literature Mailers 50-Pack ML13132K - alias listing
Boxes - Mailers

13x13x2 Kraft Corrugated Literature Mailers 50-Pack ML13132K

PN: ML13132K

13 x 13 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$94.19 / BUNDLE
IN STOCK 13x10x2 Kraft Corrugated Literature Mailers 50-Pack M13102K - alias listing
Boxes - Mailers

13x10x2 Kraft Corrugated Literature Mailers 50-Pack M13102K

PN: M13102K

13 x 10 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$89.63 / BUNDLE
IN STOCK 13x10x4 Kraft Self-Seal Corrugated Literature Mailers 50-Pack M13104K - alias listing
Boxes - Mailers

13x10x4 Kraft Self-Seal Corrugated Literature Mailers 50-Pack M13104K

PN: M13104K

13 x 10 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$102.54 / BUNDLE
IN STOCK 12 1/8 x 9 1/4 x 6 1/2 in Kraft Literature Mailers Self-Seal 50-Pack ML1296K - alias listing
Boxes - Mailers

12 1/8 x 9 1/4 x 6 1/2 in Kraft Literature Mailers Self-Seal 50-Pack ML1296K

PN: ML1296K

12 1/8 x 9 1/4 x 6 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$113.93 / BUNDLE
IN STOCK 12 1/8 x 9 1/4 x 5 in ECT-32-B Kraft Literature Mailers 50-Pack M1295K - alias listing
Boxes - Mailers

12 1/8 x 9 1/4 x 5 in ECT-32-B Kraft Literature Mailers 50-Pack M1295K

PN: M1295K

12 1/8 x 9 1/4 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$145.07 / BUNDLE
IN STOCK 12 1/8 x 9 1/4 x 4 in Kraft Literature Mailers Self-Seal 50/Bundle M1294K - alias listing
Boxes - Mailers

12 1/8 x 9 1/4 x 4 in Kraft Literature Mailers Self-Seal 50/Bundle M1294K

PN: M1294K

12 1/8 x 9 1/4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$85.83 / BUNDLE
IN STOCK 12 1/8 x 9 1/4 x 3 in Kraft Literature Mailers 50/Bundle M1293K - alias listing
Boxes - Mailers

12 1/8 x 9 1/4 x 3 in Kraft Literature Mailers 50/Bundle M1293K

PN: M1293K

12 1/8 x 9 1/4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$85.07 / BUNDLE
IN STOCK 12x12x2 Kraft Corrugated Literature Mailers 50-Pack ML12122K - alias listing
Boxes - Mailers

12x12x2 Kraft Corrugated Literature Mailers 50-Pack ML12122K

PN: ML12122K

12 x 12 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$78.23 / BUNDLE
IN STOCK 12x12x6 Kraft Self-Seal Corrugated Literature Mailers 50-Pack ML12126K - alias listing
Boxes - Mailers

12x12x6 Kraft Self-Seal Corrugated Literature Mailers 50-Pack ML12126K

PN: ML12126K

12 x 12 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$142.04 / BUNDLE
IN STOCK 12x11.75x3.25 Kraft Corrugated Literature Mailers 50-Pack M3RBXLK - alias listing
Boxes - Mailers

12x11.75x3.25 Kraft Corrugated Literature Mailers 50-Pack M3RBXLK

PN: M3RBXLK

12 x 11.75 x 3 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$85.83 / BUNDLE

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