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 orders, send your list and ZIP and get a delivered price by email.

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 finder -> Get a delivered quote for larger orders -> Compare corrugated box types -> View products below ->
IN STOCK 10x8x6 ECT-32-B White Corrugated Mailers, 50-Pack
Boxes - Mailers

10x8x6 ECT-32 White Corrugated Mailers 50-Pack

PN: M1086

10 x 8 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$105.85 / BUNDLE
IN STOCK 7 x 5 x 4 inch white corrugated mailer with folded tab closure, SKU M754.
Boxes - Mailers

7x5x4 White Corrugated Literature Mailers 50-Pack

PN: M754

7 x 5 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$47.49 / BUNDLE
IN STOCK 8x8x3 inch kraft corrugated literature mailer with fold-and-tuck construction. ECT-32-B board; bundle of 50.
Boxes - Mailers

8x8x3 Kraft Fold-and-Tuck Corrugated Literature Mailers 50-Pack

PN: ML883K

8 x 8 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$58.46 / BUNDLE
IN STOCK 12 1/8 x 9 1/4 x 4 in Kraft Literature Mailers Self-Seal, 150-Pack (3 Bundles of 50)
Boxes - Mailers

12 1/8 x 9 1/4 x 4 in Kraft Literature Mailers Self-Seal, 150-Pack (3 Bundles of 50)

PN: M1294K

12 1/8 x 9 1/4 x 4 in ECT-32-B Corrugated 150 PER PACK
$249.77 / PACK
IN STOCK 12x4x4 White Corrugated Mailers 25/Bundle
Boxes - Mailers

12x4x4 White Corrugated Mailers 25/Bundle

PN: M1244RP25

12 x 4 x 4 in 25 PER BUNDLE
$32.32 / EACH
IN STOCK Professional-grade white corrugated literature mailers in 14.25" x 11.25" x 4" dimensions deliver your marketing materials with impact. Featuring ECT-32-B crush-resistant construction with self-sealing tabs that require no additional supplies, these one-piece folding mailers assemble in seconds for efficient order fulfillment. Perfect for e-commerce brands shipping catalogs, brochures, and promotional materials–sold as a convenient 50-piece bundle.
Boxes - Mailers

14.25x11.25x4 White Corrugated Literature Mailers 50-Pack

PN: M14114

14 1/4 x 11.25 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$104.82 / BUNDLE
IN STOCK Professional white corrugated literature mailer sized 11" x 11" x 4" with integrated self-sealing tabs that fit snugly for secure closure. Made from durable ECT-32-B corrugated material designed for quick assembly without additional supplies. Sold in convenient bundles of 25.
Boxes - Mailers

11x11x4 White Self-Seal Corrugated Literature Mailers 25-Pack

PN: ML11114

11 x 11 x 4 in ECT-32-B Corrugated 25 PER BUNDLE
$91.57 / BUNDLE
IN STOCK 10.25x8.25x2 White Corrugated Literature Mailers - 50 Pack
Boxes - Mailers

10.25x8.25x2 White Corrugated Literature Mailers 50-Pack

PN: ML1082

10 1/4 x 8.25 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$58.49 / BUNDLE
IN STOCK 11 1/8 x 8 5/8 x 1" White Corrugated Easy-Fold Mailers - 50 Pack
Boxes - Mailers

11 1/8 x 8 5/8 x 1 in White Corrugated Easy-Fold Mailers 50-Pack

PN: M1181

11 1/8 x 8 5/8 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$47.28 / BUNDLE
IN STOCK Ship with confidence using these 9.5x6.5x2 white corrugated easy-fold mailers designed for maximum crush resistance and professional presentation. Engineered from ECT-32-B corrugated material with multiple-depth scoring, they collapse flat for storage and fold to your exact needs in seconds. Sold in bundles of 50–the trusted choice for e-commerce brands shipping flat items, artwork, and merchandise.
Boxes - Mailers

9.5x6.5x2 White Corrugated Easy-Fold Mailers 50-Pack

PN: M9621BF

9 1/2 x 6.5 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$53.17 / BUNDLE
IN STOCK Ship small items with confidence using these 24x2x2 ECT-32-B white corrugated mailers. One-piece fold-and-tuck design eliminates tape and glue while delivering double-wall crush resistance. Bundle of 50 saves money on per-unit costs and freight efficiency.
Boxes - Mailers

24x2x2 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M2422

24 x 2 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$61.52 / BUNDLE
IN STOCK ECT-32-B corrugated mailers sized 12" x 4" x 2" deliver crush-resistant protection with zero assembly overhead–fold, seal, ship in seconds. Double-wall construction on front and sides absorbs impact while reducing freight costs through lightweight design. 50-piece bundle ideal for warehouses processing mixed SKU volumes.
Boxes - Mailers

12x4x2 ECT-32-B White Corrugated Mailers 50/Case

PN: M1242

12 x 4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$37.04 / BUNDLE
IN STOCK Ship documents and literature with professional protection using these 12 1/8x9 1/4x6 1/2" self-seal kraft mailers. Manufactured from durable ECT-32-B corrugated cardboard, they assemble in seconds without tape, glue, or staples. Sold as a bundle of 50 boxes–the cost-effective alternative to custom cartons.
Boxes - Mailers

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

PN: ML1296K

12 1/8 x 9 1/4 x 6 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$118.49 / BUNDLE
IN STOCK Professional kraft corrugated literature mailers that assemble in seconds without tape, glue, or staples. Made from strong ECT-32-B material for crush-resistant protection. Perfect for e-commerce brands shipping documents, catalogs, and marketing materials with impact. 50 mailers per bundle.
Boxes - Mailers

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

PN: M1292K

12 1/8 x 9 1/4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$53.17 / BUNDLE
IN STOCK Save 30% on storage and shipping costs with these ECT-32-B kraft corrugated mailers. The one-piece fold-and-tuck design eliminates assembly time while dual-wall construction protects fragile items. Ships flat in 50-count bundles for maximum warehouse efficiency.
Boxes - Mailers

7x5x2 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M752K

7 x 5 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$51.65 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B kraft corrugated mailers. One-piece fold-to-close design requires no tape, glue, or staples–assemble in seconds and cut labor costs. Double-wall construction on front and sides provides superior crush resistance while staying lightweight to reduce postage.
Boxes - Mailers

5x5x5 ECT-32-B Kraft Corrugated Mailers 50/Bundle

PN: M555K

5 x 5 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$60.00 / BUNDLE
IN STOCK Professional-grade 13x10x2 white corrugated literature mailers designed for e-commerce brands shipping documents, catalogs, and promotional materials. ECT-32-B crush-resistant construction with front-locking tabs and protective side flaps ensures maximum protection without tape, glue, or staples. 50-box bundle delivers cost-effective shipping solutions.
Boxes - Mailers

13x10x2 White Corrugated Literature Mailers 50/Bundle

PN: MFL13102

13 x 10 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$113.17 / BUNDLE
IN STOCK Professional 14" x 10" x 4" kraft corrugated literature mailers designed for e-commerce brands shipping documents, catalogs, and flat products. Crush-resistant ECT-32-B material with protective side flaps and front tuck closure assembles in seconds without tape, glue, or staples. Sold as bundle of 50 boxes.
Boxes - Mailers

14x10x4 Kraft Corrugated Literature Mailers 50/Bundle

PN: MFL14104K

14 x 10 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$142.23 / BUNDLE
IN STOCK Professional-grade ECT-32-B corrugated carrying cases engineered for warehouse and fulfillment operations. Pre-assembled with integrated plastic handles, these 20" x 11 3/8" x 5 1/2" crush-resistant mailers ship as a bundle of 10 to maximize your freight efficiency and reduce per-unit costs.
Boxes - Mailers

20 x 11 3/8 x 5 1/2 in White Corrugated Carrying Cases with Handles 10/Bundle

PN: MCC5

20 x 11 3/8 x 5 1/2 in ECT-32-B Corrugated 10 PER BUNDLE
$61.37 / BUNDLE
IN STOCK 4x4x2 ECT-32-B White Corrugated Mailers, 200-Pack (4 Bundles of 50)
Boxes - Mailers

4x4x2 ECT-32-B White Corrugated Mailers, 200-Pack (4 Bundles of 50)

PN: M442

4 x 4 x 2 in ECT-32-B Corrugated 200 PER PACK
$86.76 / PACK
IN STOCK 12x9x2 Kraft Corrugated Literature Mailers, 200-Pack (4 Bundles of 50)
Boxes - Mailers

12x9x2 Kraft Corrugated Literature Mailers, 200-Pack (4 Bundles of 50)

PN: ML1292RK

12 x 9 x 2 in ECT-32-B Corrugated 200 PER PACK
$229.11 / PACK
IN STOCK 6x4x2 ECT-32-B Kraft Corrugated Mailers, 200-Pack (4 Bundles of 50)
Boxes - Mailers

6x4x2 ECT-32-B Kraft Corrugated Mailers, 200-Pack (4 Bundles of 50)

PN: M642K

6 x 4 x 2 in ECT-32-B Corrugated 200 PER PACK
$135.57 / PACK
IN STOCK 15 x 12 x 2 Inch White Corrugated Literature Mailer Boxes, 100-Pack (2 Bundles of 50)
Boxes - Mailers

15 x 12 x 2 Inch White Corrugated Literature Mailer Boxes, 100-Pack (2 Bundles of 50)

PN: ML15122

15 x 12 x 2 in ECT-32-B Corrugated 100 PER PACK
$209.64 / PACK
IN STOCK 10x4x2 ECT-32 Kraft Corrugated Mailers, 200-Pack (4 Bundles of 50)
Boxes - Mailers

10x4x2 ECT-32 Kraft Corrugated Mailers, 200-Pack (4 Bundles of 50)

PN: M1042K

10 x 4 x 2 in ECT-32-B Corrugated 200 PER PACK
$182.71 / PACK
IN STOCK 7.5x3.5x3.25 ECT-32 White Corrugated Mailers, 200-Pack (4 Bundles of 50)
Boxes - Mailers

7.5x3.5x3.25 ECT-32 White Corrugated Mailers, 200-Pack (4 Bundles of 50)

PN: MIBM5C

7 1/2 x 3.5 x 3 1/4 in ECT-32-B Corrugated 200 PER PACK
$123.00 / PACK
IN STOCK 9x7.5x3 Kraft Self-Seal Corrugated Literature Mailers, 200-Pack (4 Bundles of 50)
Boxes - Mailers

9x7.5x3 Kraft Self-Seal Corrugated Literature Mailers, 200-Pack (4 Bundles of 50)

PN: ML973K

9 x 7.5 x 3 in ECT-32-B Corrugated 200 PER PACK
$206.30 / PACK
IN STOCK 9x6.25x2 Kraft Deluxe Literature Mailers, 150-Pack (3 Bundles of 50)
Boxes - Mailers

9x6.25x2 Kraft Deluxe Literature Mailers, 150-Pack (3 Bundles of 50)

PN: MFL962K

9 x 6.25 x 2 in ECT-32-B Corrugated 150 PER PACK
$193.08 / PACK
IN STOCK 8x4x4 ECT-32-B White Corrugated Mailers, 200-Pack (4 Bundles of 50)
Boxes - Mailers

8x4x4 ECT-32-B White Corrugated Mailers, 200-Pack (4 Bundles of 50)

PN: M844

8 x 4 x 4 in ECT-32-B Corrugated 200 PER PACK
$143.79 / PACK
IN STOCK 16x10x3 White Corrugated Literature Mailers, 100-Pack (2 Bundles of 50)
Boxes - Mailers

16x10x3 White Corrugated Literature Mailers, 100-Pack (2 Bundles of 50)

PN: ML16103

16 x 10 x 3 in ECT-32-B Corrugated 100 PER PACK
$215.72 / PACK
IN STOCK 11 1/8 x 8 3/4 x 3 in Kraft Literature Mailers Self-Seal, 150-Pack (3 Bundles of 50)
Boxes - Mailers

11 1/8 x 8 3/4 x 3 in Kraft Literature Mailers Self-Seal, 150-Pack (3 Bundles of 50)

PN: M1183K

11 1/8 x 8 3/4 x 3 in ECT-32-B Corrugated 150 PER PACK
$195.38 / PACK
IN STOCK 36x24x1 ECT-32-B White Corrugated Fold-Over Mailers, 40-Pack (2 Bundles of 20)
Boxes - Mailers

36x24x1 ECT-32-B White Corrugated Fold-Over Mailers, 40-Pack (2 Bundles of 20)

PN: M36241

36 x 24 x 1 in ECT-32-B Corrugated 40 PER PACK
$221.06 / PACK
IN STOCK 22x18x2.75 White Corrugated Literature Mailers, 50-Pack (2 Bundles of 25)
Boxes - Mailers

22x18x2.75 White Corrugated Literature Mailers, 50-Pack (2 Bundles of 25)

PN: MFL22182

22 x 18 x 2 3/4 in ECT-32-B Corrugated 50 PER PACK
$206.74 / PACK
IN STOCK 8x8x1.25 White Corrugated Literature Mailers, 200-Pack (4 Bundles of 50)
Boxes - Mailers

8x8x1.25 White Corrugated Literature Mailers, 200-Pack (4 Bundles of 50)

PN: ML881

8 x 8 x 1 1/4 in ECT-32-B Corrugated 200 PER PACK
$173.86 / PACK
IN STOCK 7x7x2 White Self-Seal Corrugated Literature Mailers, 200-Pack (4 Bundles of 50)
Boxes - Mailers

7x7x2 White Self-Seal Corrugated Literature Mailers, 200-Pack (4 Bundles of 50)

PN: ML772

7 x 7 x 2 in ECT-32-B Corrugated 200 PER PACK
$162.11 / PACK
IN STOCK 12x12x2 Kraft Corrugated Literature Mailers, 150-Pack (3 Bundles of 50)
Boxes - Mailers

12x12x2 Kraft Corrugated Literature Mailers, 150-Pack (3 Bundles of 50)

PN: ML12122K

12 x 12 x 2 in ECT-32-B Corrugated 150 PER PACK
$227.65 / PACK
IN STOCK 10x8x5 ECT-32 White Corrugated Mailers, 100-Pack (2 Bundles of 50)
Boxes - Mailers

10x8x5 ECT-32 White Corrugated Mailers, 100-Pack (2 Bundles of 50)

PN: M1085

10 x 8 x 5 in ECT-32-B Corrugated 100 PER PACK
$206.96 / PACK
IN STOCK 6x4x3 ECT-32-B White Corrugated Mailers, 200-Pack (4 Bundles of 50)
Boxes - Mailers

6x4x3 ECT-32-B White Corrugated Mailers, 200-Pack (4 Bundles of 50)

PN: M643

6 x 4 x 3 in ECT-32-B Corrugated 200 PER PACK
$117.14 / PACK
IN STOCK 9x3x3 ECT-32-B White One-Piece Corrugated Mailers, 200-Pack (4 Bundles of 50)
Boxes - Mailers

9x3x3 ECT-32-B White One-Piece Corrugated Mailers, 200-Pack (4 Bundles of 50)

PN: M933

9 x 3 x 3 in ECT-32-B Corrugated 200 PER PACK
$115.78 / PACK
IN STOCK 5x4x3 ECT-32-B White Corrugated Mailers, 200-Pack (4 Bundles of 50)
Boxes - Mailers

5x4x3 ECT-32-B White Corrugated Mailers, 200-Pack (4 Bundles of 50)

PN: M543

5 x 4 x 3 in ECT-32-B Corrugated 200 PER PACK
$128.58 / PACK

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