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 12x9x3 Kraft Easy Fold Mailers 50/Bundle M12932BFK - alias listing
Boxes - Mailers

12x9x3 Kraft Easy Fold Mailers 50/Bundle M12932BFK

PN: M12932BFK

12 x 9 x 3 in 50 PER BUNDLE
$108.80 / EACH
IN STOCK 6x4x3 White Mailers 25/Bundle M643RP25 - alias listing
Boxes - Mailers

6x4x3 White Mailers 25/Bundle M643RP25

PN: M643RP25

6 x 4 x 3 in 25 PER BUNDLE
$28.03 / EACH
IN STOCK 7x4x4 White Corrugated Mailers 50-Pack M744 - alias listing
Boxes - Mailers

7x4x4 White Corrugated Mailers 50-Pack M744

PN: M744

7 x 4 x 4 in 50 PER PACK
$35.93 / EACH
IN STOCK 6x4x3 Kraft Mailers 25/Bundle M643KRP25 - alias listing
Boxes - Mailers

6x4x3 Kraft Mailers 25/Bundle M643KRP25

PN: M643KRP25

6 x 4 x 3 in 25 PER BUNDLE
$26.56 / EACH
IN STOCK 4x3x2 White Corrugated Mailers 25/Bundle M432RP25 - alias listing
Boxes - Mailers

4x3x2 White Corrugated Mailers 25/Bundle M432RP25

PN: M432RP25

4 x 3 x 2 in 25 PER BUNDLE
$9.46 / EACH
IN STOCK 9x6x4 White Mailers 10/Bundle M964RP10 - alias listing
Boxes - Mailers

9x6x4 White Mailers 10/Bundle M964RP10

PN: M964RP10

9 x 6.25 x 4 in 10 PER BUNDLE
$19.11 / EACH
IN STOCK 12x4x4 White Corrugated Mailers 25/Bundle M1244RP25 - alias listing
Boxes - Mailers

12x4x4 White Corrugated Mailers 25/Bundle M1244RP25

PN: M1244RP25

12 x 4 x 4 in 25 PER BUNDLE
$30.36 / EACH
IN STOCK 12x9x3 White Mailers 20/Bundle M1293RP20 - alias listing
Boxes - Mailers

12x9x3 White Mailers 20/Bundle M1293RP20

PN: M1293RP20

12.125 x 9.25 x 3 in 20 PER BUNDLE
$45.75 / EACH
IN STOCK 12 1/8 x 11 5/8 x 2 5/8 in White Side Loading Locking Mailers 50-Pack MAL12112 - alias listing
Boxes - Mailers

12 1/8 x 11 5/8 x 2 5/8 in White Side Loading Locking Mailers 50-Pack MAL12112

PN: MAL12112

12 1/8 x 11 5/8 x 2 5/8 in ECT-32-B Corrugated 50 PER BUNDLE
$48.61 / BUNDLE
IN STOCK 30x24x4 White Corrugated Literature Mailers 25-Pack ML30244 - alias listing
Boxes - Mailers

30x24x4 White Corrugated Literature Mailers 25-Pack ML30244

PN: ML30244

30 x 24 x 4 in ECT-32-B Corrugated 25 PER BUNDLE
$153.81 / BUNDLE
IN STOCK 23x13x2.5 ECT-32-B White Corrugated Literature Mailers ML23132 - alias listing
Boxes - Mailers

23x13x2.5 ECT-32-B White Corrugated Literature Mailers ML23132

PN: ML23132

23 x 13 x 2 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$144.31 / BUNDLE
IN STOCK 18x12x3 White Self-Seal Corrugated Literature Mailers 25/Bundle ML18123 - alias listing
Boxes - Mailers

18x12x3 White Self-Seal Corrugated Literature Mailers 25/Bundle ML18123

PN: ML18123

18 x 12 x 3 in ECT-32-B Corrugated 25 PER BUNDLE
$58.49 / BUNDLE
IN STOCK 17.25x11.25x6 White Corrugated Literature Mailers 25-Pack ML17116 - alias listing
Boxes - Mailers

17.25x11.25x6 White Corrugated Literature Mailers 25-Pack ML17116

PN: ML17116

17 1/4 x 11.25 x 6 in ECT-32-B Corrugated 25 PER BUNDLE
$101.02 / BUNDLE
IN STOCK 17.25x11.25x4 White Corrugated Literature Mailers 25/Bundle ML17114 - alias listing
Boxes - Mailers

17.25x11.25x4 White Corrugated Literature Mailers 25/Bundle ML17114

PN: ML17114

17 1/4 x 11.25 x 4 in ECT-32-B Corrugated 25 PER BUNDLE
$66.08 / BUNDLE
IN STOCK 17.125x11.125x4 White Corrugated Literature Mailers 50-Pack M17114 - alias listing
Boxes - Mailers

17.125x11.125x4 White Corrugated Literature Mailers 50-Pack M17114

PN: M17114

17 1/8 x 11 1/8 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$137.85 / BUNDLE
IN STOCK 17 1/8 x 11 1/8 x 5 in White Corrugated Literature Mailers 50/Bundle M17115 - alias listing
Boxes - Mailers

17 1/8 x 11 1/8 x 5 in White Corrugated Literature Mailers 50/Bundle M17115

PN: M17115

17 1/8 x 11 1/8 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$165.42 / BUNDLE
IN STOCK 17 1/8 x 11 1/8 x 3 in White Corrugated Literature Mailers 50/Bundle M17113 - alias listing
Boxes - Mailers

17 1/8 x 11 1/8 x 3 in White Corrugated Literature Mailers 50/Bundle M17113

PN: M17113

17 1/8 x 11 1/8 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$111.03 / BUNDLE
IN STOCK 17 1/8 x 11 1/8 x 2 in White Corrugated Literature Mailers 50-Pack M17112 - alias listing
Boxes - Mailers

17 1/8 x 11 1/8 x 2 in White Corrugated Literature Mailers 50-Pack M17112

PN: M17112

17 1/8 x 11 1/8 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$87.35 / BUNDLE
IN STOCK 17x11x2.5 ECT-32-B White Corrugated Literature Mailers 25/Bundle ML17112 - alias listing
Boxes - Mailers

17x11x2.5 ECT-32-B White Corrugated Literature Mailers 25/Bundle ML17112

PN: ML17112

17 x 11 x 2 1/2 in ECT-32-B Corrugated 25 PER BUNDLE
$53.55 / BUNDLE
IN STOCK 16x16x2 White Self-Seal Corrugated Literature Mailers 50-Pack ML16162 - alias listing
Boxes - Mailers

16x16x2 White Self-Seal Corrugated Literature Mailers 50-Pack ML16162

PN: ML16162

16 x 16 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$123.81 / BUNDLE
IN STOCK 16x16x4 White Corrugated Literature Mailers 25-Pack ML16164 - alias listing
Boxes - Mailers

16x16x4 White Corrugated Literature Mailers 25-Pack ML16164

PN: ML16164

16 x 16 x 4 in ECT-32-B Corrugated 25 PER BUNDLE
$91.91 / BUNDLE
IN STOCK 16x12x3 White Self-Seal Corrugated Literature Mailers 50/Bundle ML16123 - alias listing
Boxes - Mailers

16x12x3 White Self-Seal Corrugated Literature Mailers 50/Bundle ML16123

PN: ML16123

16 x 12 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$124.57 / BUNDLE
IN STOCK 16x8x4 White Self-Seal Corrugated Literature Mailers 50-Pack ML1684 - alias listing
Boxes - Mailers

16x8x4 White Self-Seal Corrugated Literature Mailers 50-Pack ML1684

PN: ML1684

16 x 8 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$110.14 / BUNDLE
IN STOCK 16x10x3 White Corrugated Literature Mailers 50/Bundle ML16103 - alias listing
Boxes - Mailers

16x10x3 White Corrugated Literature Mailers 50/Bundle ML16103

PN: ML16103

16 x 10 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$107.86 / BUNDLE
IN STOCK 16x8x3 White Corrugated Literature Mailers 50-Pack ML1683 - alias listing
Boxes - Mailers

16x8x3 White Corrugated Literature Mailers 50-Pack ML1683

PN: ML1683

16 x 8 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$86.59 / BUNDLE
IN STOCK 15 1/8 x 11 1/8 x 5 in White Corrugated Literature Mailers 50-Pack M15115 - alias listing
Boxes - Mailers

15 1/8 x 11 1/8 x 5 in White Corrugated Literature Mailers 50-Pack M15115

PN: M15115

15 1/8 x 11 1/8 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$231.74 / BUNDLE
IN STOCK 15.125x11.125x4 White Corrugated Literature Mailers 50-Pack MIBMS1000 - alias listing
Boxes - Mailers

15.125x11.125x4 White Corrugated Literature Mailers 50-Pack MIBMS1000

PN: MIBMS1000

15 1/8 x 11 1/8 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$113.79 / BUNDLE
IN STOCK 15 1/8 x 11 1/8 x 3 in White Corrugated Literature Mailers 50-Pack M15113 - alias listing
Boxes - Mailers

15 1/8 x 11 1/8 x 3 in White Corrugated Literature Mailers 50-Pack M15113

PN: M15113

15 1/8 x 11 1/8 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$97.22 / BUNDLE
IN STOCK 14x14x3 White Self-Seal Corrugated Literature Mailers 50-Pack ML14143 - alias listing
Boxes - Mailers

14x14x3 White Self-Seal Corrugated Literature Mailers 50-Pack ML14143

PN: ML14143

14 x 14 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$122.29 / BUNDLE
IN STOCK 14x14x2 White Self-Seal Corrugated Literature Mailers 50-Pack M14142 - alias listing
Boxes - Mailers

14x14x2 White Self-Seal Corrugated Literature Mailers 50-Pack M14142

PN: M14142

14 x 14 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$107.10 / BUNDLE
IN STOCK 14x12x4 White Corrugated Literature Mailers 50-Pack ML14124 - alias listing
Boxes - Mailers

14x12x4 White Corrugated Literature Mailers 50-Pack ML14124

PN: ML14124

14 x 12 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$125.33 / BUNDLE
IN STOCK 13x13x3 White Self-Seal Corrugated Literature Mailers 50/Bundle ML13133 - alias listing
Boxes - Mailers

13x13x3 White Self-Seal Corrugated Literature Mailers 50/Bundle ML13133

PN: ML13133

13 x 13 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$113.93 / BUNDLE
IN STOCK 13x13x4 White Self-Seal Corrugated Literature Mailers 50/Bundle ML13134 - alias listing
Boxes - Mailers

13x13x4 White Self-Seal Corrugated Literature Mailers 50/Bundle ML13134

PN: ML13134

13 x 13 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$130.64 / BUNDLE
IN STOCK 13x13x2 White Self-Seal Corrugated Literature Mailers 50-Pack ML13132 - alias listing
Boxes - Mailers

13x13x2 White Self-Seal Corrugated Literature Mailers 50-Pack ML13132

PN: ML13132

13 x 13 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$102.54 / BUNDLE
IN STOCK 13x10x3 White Corrugated Literature Mailers 50-Pack ML13103 - alias listing
Boxes - Mailers

13x10x3 White Corrugated Literature Mailers 50-Pack ML13103

PN: ML13103

13 x 10 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$104.82 / BUNDLE
IN STOCK 13x10x1.25 White Corrugated Literature Mailers 50/Bundle ML13101 - alias listing
Boxes - Mailers

13x10x1.25 White Corrugated Literature Mailers 50/Bundle ML13101

PN: ML13101

13 x 10 x 1 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$78.23 / BUNDLE
IN STOCK 13x10x2 White Corrugated Literature Mailers 50-Pack M13102 - alias listing
Boxes - Mailers

13x10x2 White Corrugated Literature Mailers 50-Pack M13102

PN: M13102

13 x 10 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$112.79 / BUNDLE
IN STOCK 12 1/8 x 9 1/4 x 6 1/2 in White Corrugated Literature Mailers 50-Pack ML1296 - alias listing
Boxes - Mailers

12 1/8 x 9 1/4 x 6 1/2 in White Corrugated Literature Mailers 50-Pack ML1296

PN: ML1296

12 1/8 x 9 1/4 x 6 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$140.52 / BUNDLE
IN STOCK 12.5x5x3 White Corrugated Literature Mailers 50/Bundle ML1253 - alias listing
Boxes - Mailers

12.5x5x3 White Corrugated Literature Mailers 50/Bundle ML1253

PN: ML1253

12 1/2 x 5 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$66.84 / BUNDLE
IN STOCK 12 1/8 x 9 1/4 x 5 in ECT-32-B White Corrugated Literature Mailers 50-Pack M1295 - alias listing
Boxes - Mailers

12 1/8 x 9 1/4 x 5 in ECT-32-B White Corrugated Literature Mailers 50-Pack M1295

PN: M1295

12 1/8 x 9 1/4 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$113.17 / BUNDLE
IN STOCK 12 1/8 x 9 1/4 x 1 1/4 in White Corrugated Literature Mailers 50-Pack ML1291R - alias listing
Boxes - Mailers

12 1/8 x 9 1/4 x 1 1/4 in White Corrugated Literature Mailers 50-Pack ML1291R

PN: ML1291R

12 1/8 x 9 1/4 x 1 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$80.51 / BUNDLE
IN STOCK 12 1/8 x 9 1/4 x 4 in White Corrugated Literature Mailers Self-Seal 50/Bundle M1294 - alias listing
Boxes - Mailers

12 1/8 x 9 1/4 x 4 in White Corrugated Literature Mailers Self-Seal 50/Bundle M1294

PN: M1294

12 1/8 x 9 1/4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$87.62 / BUNDLE
IN STOCK 12 1/8 x 9 1/4 x 1 in ECT-32-B White Corrugated Literature Mailers 50-Pack ML1291 - alias listing
Boxes - Mailers

12 1/8 x 9 1/4 x 1 in ECT-32-B White Corrugated Literature Mailers 50-Pack ML1291

PN: ML1291

12 1/8 x 9 1/4 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$56.63 / BUNDLE
IN STOCK 12x12x6 White Self-Seal Corrugated Literature Mailers 50-Pack ML12126 - alias listing
Boxes - Mailers

12x12x6 White Self-Seal Corrugated Literature Mailers 50-Pack ML12126

PN: ML12126

12 x 12 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$186.85 / BUNDLE
IN STOCK 12x12x4 White Corrugated Literature Mailers 50-Pack M12124 - alias listing
Boxes - Mailers

12x12x4 White Corrugated Literature Mailers 50-Pack M12124

PN: M12124

12 x 12 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$119.25 / BUNDLE
IN STOCK 12x12x2 White Corrugated Literature Mailers 50-Pack M12122 - alias listing
Boxes - Mailers

12x12x2 White Corrugated Literature Mailers 50-Pack M12122

PN: M12122

12 x 12 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$73.68 / BUNDLE
IN STOCK 12x12x3 White Corrugated Literature Mailers 50/Bundle ML12123 - alias listing
Boxes - Mailers

12x12x3 White Corrugated Literature Mailers 50/Bundle ML12123

PN: ML12123

12 x 12 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$107.86 / BUNDLE
IN STOCK 12x11.75x3.25 White Corrugated Literature Mailers 50-Pack M3RBXL - alias listing
Boxes - Mailers

12x11.75x3.25 White Corrugated Literature Mailers 50-Pack M3RBXL

PN: M3RBXL

12 x 11.75 x 3 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$94.94 / BUNDLE

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