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 Ship documents and marketing materials with professional presentation and crush-resistant protection. These self-sealing kraft corrugated literature mailers assemble in seconds without tape, glue, or staples. Perfect for e-commerce brands shipping catalogs, brochures, and documents–50-pack bundle of 11 1/8 x 8 3/4 x 2 5/16
Boxes - Mailers

11 1/8 x 8 3/4 x 2 5/16 in Kraft Literature Mailers 50-Pack

PN: M1182DK

11 1/8 x 8 3/4 x 2 5/16 in ECT-32-B Corrugated 50 PER BUNDLE
$55.45 / BUNDLE
IN STOCK 11 1/8 x 8 3/4 x 2
Boxes - Mailers

11 1/8 x 8 3/4 x 2 in ECT-32-B Kraft Corrugated Literature Mailer 50/Bundle

PN: M1182K

11 1/8 x 8 3/4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$54.69 / BUNDLE
IN STOCK Assemble in seconds–no tape, glue, or staples required. These 11x6.5x2.75 ECT-32 kraft corrugated literature mailers deliver professional presentation for catalogs, brochures, and documents. Crush-resistant one-piece design. 50 mailers per bundle.
Boxes - Mailers

11x6.5x2.75 Kraft Self-Seal Corrugated Literature Mailers 50-Pack

PN: M1162K

11 x 6.5 x 2 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$48.61 / BUNDLE
IN STOCK 10x10x4 Kraft Literature Mailers - Self-Seal Corrugated, 50-Pack
Boxes - Mailers

10x10x4 Kraft Self-Seal Corrugated Literature Mailers 50-Pack

PN: M10104K

10 x 10 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$90.39 / BUNDLE
IN STOCK 10x10x3 Kraft Literature Mailer - Self-Seal Corrugated Box, 50 Bundle
Boxes - Mailers

10x10x3 Kraft Self-Seal Corrugated Literature Mailers 50/Bundle

PN: ML10103K

10 x 10 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$130.64 / BUNDLE
IN STOCK 10x6x4 Kraft Literature Mailers - Self-Seal Corrugated, 50-Pack
Boxes - Mailers

10x6x4 Kraft Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML1064K

10 x 6 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$76.71 / BUNDLE
IN STOCK Ship catalogs, brochures, and documents with professional kraft corrugated mailers. These 9x9x3 self-seal literature mailers assemble in seconds without tape–50 per bundle. Strong ECT-32-B construction resists crushing and punctures for reliable product protection.
Boxes - Mailers

9x9x3 Kraft Self-Seal Corrugated Literature Mailers 50/Bundle

PN: M993K

9 x 9 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$60.00 / BUNDLE
IN STOCK Professional 9x9x2 kraft literature mailers built from ECT-32-B corrugated for maximum crush resistance. Self-seal design assembles in seconds without tape, glue, or staples. Perfect for ecommerce brands shipping documents, catalogs, and promotional materials–50 mailers per bundle.
Boxes - Mailers

9x9x2 Kraft Self-Seal Corrugated Literature Mailers 50/Bundle

PN: ML992K

9 x 9 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$45.57 / BUNDLE
IN STOCK Ship documents and literature with confidence using these 9x7.5x3 kraft corrugated mailers. Self-sealing design assembles in seconds without tape, glue, or staples. Each bundle includes 50 crush-resistant mailers manufactured from durable ECT-32-B corrugated material–the professional standard for e-commerce brands.
Boxes - Mailers

9x7.5x3 Kraft Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML973K

9 x 7.5 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$53.17 / BUNDLE
IN STOCK Professional kraft literature mailers designed for e-commerce brands shipping documents, catalogs, and promotional materials. Engineered from ECT-32-B corrugated kraft with a self-seal closure that assembles in seconds–no tape, glue, or staples needed. Bundle of 50 crush-resistant mailers at wholesale pricing.
Boxes - Mailers

9x6.5x4 Kraft Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML964K

9 x 6.5 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$91.91 / CASE
IN STOCK Professional kraft corrugated literature mailers sized 9
Boxes - Mailers

9x6.5x2.75 Kraft Self-Seal Literature Mailers 50-Pack

PN: M962K

9 x 6.5 x 2 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$44.81 / BUNDLE
IN STOCK Professional 9
Boxes - Mailers

9x6.5x1.75 Kraft Literature Mailers 50/Bundle

PN: ML961K

9 x 6.5 x 1 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$40.26 / BUNDLE
IN STOCK Professional kraft literature mailers designed for e-commerce brands shipping documents, catalogs, and marketing materials. These 9x6.25x4
Boxes - Mailers

9x6.25x4 Kraft Self-Seal Corrugated Literature Mailers 50-Pack

PN: M964K

9 x 6.25 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$78.23 / BUNDLE
IN STOCK Professional-grade kraft literature mailers sized 7.5
Boxes - Mailers

7.5x7x3.25 Kraft Self-Seal Literature Mailers 50-Pack

PN: MIBM1MK

7 1/2 x 7 x 3 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$55.45 / BUNDLE
IN STOCK Ship professional documents and literature with confidence using these crush-resistant kraft literature mailers. Pre-designed 7 3/8
Boxes - Mailers

7 3/8 x 7 3/8 x 1 3/8 in Kraft Literature Mailers 50-Pack

PN: MMC1K

7 3/8 x 7 3/8 x 1 3/8 in ECT-32-B Corrugated 50 PER BUNDLE
$48.43 / BUNDLE
IN STOCK Professional-grade 7x7x2 kraft literature mailers designed for e-commerce brands shipping catalogs, brochures, and documents. Manufactured from durable ECT-32-B corrugated cardboard with self-seal closure–no tape, glue, or staples required. Bundle of 50 crush-resistant mailers ready to assemble in seconds.
Boxes - Mailers

7x7x2 Kraft Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML772K

7 x 7 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$37.22 / BUNDLE
IN STOCK Professional-grade 7x3 5/8x2 1/8 kraft corrugated literature mailers designed for e-commerce brands shipping documents, catalogs, and marketing materials. ECT-32-B corrugated construction delivers crush resistance without custom tooling costs. Self-seal fold-and-tuck assembly requires no tape, glue, or staples–50 boxes per bundle ready to use immediately.
Boxes - Mailers

7 x 3 5/8 x 2 1/8 in ECT-32-B Kraft Corrugated Literature Mailers 50-Pack

PN: ML732K

7 x 3 5/8 x 2 1/8 in ECT-32-B Corrugated 50 PER BUNDLE
$28.86 / BUNDLE
IN STOCK Professional-grade 6x6x2 literature mailers manufactured from ECT-32-B kraft corrugated for maximum protection without custom costs. Self-sealing fold-and-tuck design assembles instantly–no tape, glue, or staples required. Ideal for e-commerce brands shipping catalogs, brochures, and documents in bulk.
Boxes - Mailers

6x6x2 Kraft Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML662K

6 x 6 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$35.70 / BUNDLE
IN STOCK Crush-resistant kraft corrugated mailers sized 24
Boxes - Mailers

24x4x4 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M2444K

24 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$76.75 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32 kraft corrugated mailers. One-piece fold-and-tuck design requires no tape, glue, or staples–assembly takes seconds. Double-wall crush-resistant construction protects fragile goods while shipping flat saves warehouse space and freight costs.
Boxes - Mailers

17.5x3.5x3.5 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: MLR84K

17 1/2 x 3.5 x 3 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$51.42 / BUNDLE
IN STOCK Heavy-duty ECT-32 kraft corrugated mailers engineered for maximum crush resistance and doubled protection. One-piece fold-and-tuck design requires no tape, glue, or staples–assembly takes seconds. Ships and stores flat in 50-unit bundles to optimize warehouse space and reduce freight costs.
Boxes - Mailers

16x4x4 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M1644K

16 x 4 x 4 in ECT-32 Single Wall Corrugated 50 PER BUNDLE
$89.63 / BUNDLE
IN STOCK Ship small items with confidence using our ECT-32-B kraft corrugated mailers. One-piece fold-and-tuck design eliminates tape and assembly time while double walls provide crush resistance. Bundle of 50 ships flat to maximize warehouse efficiency.
Boxes - Mailers

14x4x4 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M1444K

14 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$69.88 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B kraft corrugated mailers featuring crush-resistant double-wall construction on front and sides. One-piece fold-and-tuck design requires no tape, glue, or staples–assembly takes seconds. At 13.5x3.5x3.5
Boxes - Mailers

13.5x3.5x3.5 ECT-32-B Kraft Corrugated Mailers 50/Bundle

PN: MLRBLK

13 1/2 x 3.5 x 3 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$42.47 / BUNDLE
IN STOCK Lightweight 12x9x4
Boxes - Mailers

12x9x4 ECT-32-B Kraft Corrugated Mailers 50/Bundle

PN: MLR1294K

12 x 9 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$107.86 / BUNDLE
IN STOCK Save warehouse space and shipping costs with these ECT-32-B crush-resistant kraft corrugated mailers in 12x9x2 dimensions. One-piece folding design requires no tape, glue, or staples–ready to pack in seconds. Bundle of 50 ships and stores flat for maximum efficiency.
Boxes - Mailers

12x9x2 ECT-32 Kraft Corrugated Mailers 50/Bundle

PN: MLR1292K

12 x 9 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$107.86 / BUNDLE
IN STOCK ECT-32-B kraft corrugated mailers engineered for small parcel shipping and fragile item protection. These one-piece, crush-resistant mailers fold flat for space-efficient storage and reduce dimensional weight charges. Bundle of 50 ships ready to deploy–no tape, glue, or staples required.
Boxes - Mailers

12x6x6 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M1266K

12 x 6 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$89.63 / BUNDLE
IN STOCK Ship small, fragile items with confidence using these 12x6x4 kraft corrugated mailers made from ECT-32-B material. Double-wall crush-resistant construction requires no tape, glue, or staples–fold and pack in seconds. Bundle of 50 ships flat to maximize storage efficiency and reduce freight costs.
Boxes - Mailers

12x6x4 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M1264K

12 x 6 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$72.92 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B kraft corrugated mailers featuring crush-resistant, one-piece fold-and-tuck construction. At 12
Boxes - Mailers

12x4x4 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M1244K

12 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$61.52 / BUNDLE
IN STOCK Reduce shipping costs with these lightweight 12x4x2 kraft corrugated mailers manufactured from durable ECT-32-B material. One-piece fold-and-tuck design requires no tape, glue, or staples and provides double-wall crush resistance on front and sides. Bundle of 50 ships flat to maximize storage efficiency in your warehouse.
Boxes - Mailers

12x4x2 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M1242K

12 x 4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$30.38 / BUNDLE
IN STOCK 10x7x3 Kraft Corrugated Mailers ECT-32-B, Bundle of 50
Boxes - Mailers

10x7x3 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M1073K

10 x 7 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$79.75 / BUNDLE
IN STOCK 10x6x6 ECT-32 Kraft Corrugated Mailers, 50/Bundle
Boxes - Mailers

10x6x6 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M1066K

10 x 6 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$76.75 / BUNDLE
IN STOCK One-piece kraft corrugated mailers with double-wall crush-resistant construction–no tape, glue, or staples required. These 10x6x4
Boxes - Mailers

10x6x4 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M1064K

10 x 6 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$71.40 / BUNDLE
IN STOCK Premium ECT-32-B kraft corrugated mailers in 10x5x5 dimensions–engineered for crush resistance and maximum protection. One-piece fold-and-tuck design requires no tape, glue, or staples. Ships and stores flat to reduce warehouse footprint and freight costs. Bundle of 50.
Boxes - Mailers

10x5x5 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M1055K

10 x 5 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$69.88 / BUNDLE
IN STOCK 10x4x4
Boxes - Mailers

10x4x4 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M1044K

10 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$58.49 / BUNDLE
IN STOCK 10x4x3
Boxes - Mailers

10x4x3 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M1043K

10 x 4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$35.77 / BUNDLE
IN STOCK 10x4x2 Kraft Corrugated Mailers ECT-32 - 50/Bundle
Boxes - Mailers

10x4x2 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M1042K

10 x 4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$47.09 / BUNDLE
IN STOCK 10x3x3 Kraft Corrugated Mailers ECT-32 50/Bundle
Boxes - Mailers

10x3x3 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M1033K

10 x 3 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$67.16 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B kraft corrugated mailers. One-piece fold-and-tuck design with double-wall protection requires no tape, glue, or staples–ready to use in seconds. 50/bundle ships flat for maximum warehouse efficiency and reduced postage costs.
Boxes - Mailers

9x7x4 ECT-32-B Kraft Corrugated Mailers 50/Bundle

PN: M974K

9 x 7 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$72.16 / BUNDLE
IN STOCK ECT-32-B kraft corrugated mailers deliver double-wall crush resistance in a one-piece, fold-and-tuck design that requires no tape, glue, or staples. These 9
Boxes - Mailers

9x6x4 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: MLR964K

9 x 6 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$69.88 / BUNDLE
IN STOCK Ship small items with confidence using our 9x6x3 kraft corrugated mailers. ECT-32-B crush-resistant construction provides double-wall protection on front and sides, while the one-piece fold-and-tuck design requires no tape, glue, or staples. Bundle of 50 ships and stores flat to maximize warehouse efficiency and reduce freight costs.
Boxes - Mailers

9x6x3 ECT-32-B Kraft Corrugated Mailers 50-Pack

PN: M963K

9 x 6 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$64.56 / BUNDLE
IN STOCK ECT-32 single-wall kraft corrugated mailers built for small item shipping. One-piece fold-and-tuck design creates double-wall protection on front and sides–no tape, glue, or staples needed. Ships and stores flat to maximize warehouse efficiency. 50 mailers per bundle.
Boxes - Mailers

9x6x2 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: MLR962K

9 x 6 x 2 in ECT-32 Single Wall Corrugated 50 PER BUNDLE
$62.28 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B kraft corrugated mailers featuring double-wall crush-resistant construction. The one-piece folding design requires no tape, glue, or staples–simply fold and tuck in seconds. Bulk 50-pack ships flat to maximize warehouse efficiency and minimize freight costs.
Boxes - Mailers

9x4x4 ECT-32-B Kraft Corrugated Mailers 50-Pack

PN: M944K

9 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$54.69 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B kraft corrugated mailers. One-piece fold-and-tuck design requires no tape, glue, or staples–assembly takes seconds. Double-wall crush-resistant construction protects fragile products while flat storage maximizes warehouse space. Bundle of 50.
Boxes - Mailers

9x4x3 ECT-32-B Kraft Corrugated Mailers 50-Pack

PN: M943K

9 x 4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$55.14 / BUNDLE
IN STOCK Lightweight ECT-32-B kraft corrugated mailers engineered for small-parcel shipping. One-piece fold-and-tuck design requires no tape, glue, or staples–assembly takes seconds. Ships and stores flat to maximize warehouse efficiency. Bundle of 50.
Boxes - Mailers

9x3x3 ECT-32-B Kraft Corrugated Mailers 50/Bundle

PN: M933K

9 x 3 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$43.29 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B kraft corrugated mailers. One-piece fold-and-tuck design delivers double-wall protection on front and sides without tape, glue, or staples. Bundle of 50 ships flat to maximize warehouse efficiency and minimize storage footprint.
Boxes - Mailers

8x8x4 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M884K

8 x 8 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$85.07 / BUNDLE
IN STOCK Ship small, fragile items with confidence using these ECT-32-B kraft corrugated mailers. One-piece fold-and-tuck design eliminates tape and glue while delivering double-wall crush protection. Bundle of 50 ships and stores flat–maximize warehouse efficiency and freight savings.
Boxes - Mailers

8x6x4 ECT-32 Kraft Corrugated Mailers 50/Bundle

PN: M864K

8 x 6 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$92.40 / BUNDLE
IN STOCK ECT-32-B crush-resistant mailers deliver double-wall protection in a one-piece folding design–no tape, glue, or staples required. Ships and stores completely flat, reducing warehouse footprint and postage costs. Perfect for small, fragile items requiring reliable protection.
Boxes - Mailers

8x6x3 ECT-32-B Kraft Corrugated Mailers 50-Pack

PN: M863K

8 x 6 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$62.28 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B kraft corrugated mailers. Double-wall crush-resistant construction requires zero assembly–just fold and seal. 50-pack bundle delivers superior protection and maximum freight efficiency for warehouse operations.
Boxes - Mailers

8x6x2 ECT-32-B Kraft Corrugated Mailers 50-Pack

PN: M862K

8 x 6 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$61.52 / BUNDLE

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