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 important documents with confidence using these 18x12x6 deluxe kraft literature mailers. Engineered from strong ECT-32-B corrugated material with protective side flaps and front tuck closure for maximum crush resistance. Assembles in seconds without tape, glue, or staples–sold in bundles of 25 for cost-effective bulk protection.
Boxes - Mailers

18x12x6 Kraft Corrugated Literature Mailers 25-Pack

PN: MFL18126K

18 x 12 x 6 in ECT-32-B Corrugated 25 PER BUNDLE
$125.71 / BUNDLE
IN STOCK Professional-grade 18x12x4
Boxes - Mailers

18x12x4 Kraft Deluxe Literature Mailers 25/Bundle

PN: MFL18124K

18 x 12 x 4 in ECT-32-B Corrugated 25 PER BUNDLE
$112.79 / BUNDLE
IN STOCK Premium 18x12x3
Boxes - Mailers

18x12x3 Kraft Corrugated Literature Mailers 25-Pack

PN: MFL18123K

18 x 12 x 3 in ECT-32-B Corrugated 25 PER BUNDLE
$80.48 / BUNDLE
IN STOCK Ship important documents with confidence using these 18x12x2 kraft corrugated literature mailers. Features protective side flaps, front tuck closure, and ECT-32-B strength for maximum crush resistance. One-piece design assembles in seconds without tape, glue, or staples–50 boxes per bundle.
Boxes - Mailers

18x12x2 Kraft Corrugated Literature Mailers 50/Bundle

PN: MFL18122K

18 x 12 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$127.60 / BUNDLE
IN STOCK Protect your documents in style with these deluxe kraft literature mailers featuring self-sealing closure and robust ECT-32-B corrugated construction. Measures 17 1/8 x 11 1/8 x 4
Boxes - Mailers

17 1/8 x 11 1/8 x 4 in Kraft Deluxe Literature Mailer Self-Seal 50-Pack

PN: MFL17114K

17 1/8 x 11 1/8 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$108.79 / BUNDLE
IN STOCK Protect your catalogs and documents with crush-resistant kraft corrugated mailers that assemble in seconds without tape or glue. Each 17 1/8 x 11 1/8 x 3
Boxes - Mailers

17 1/8 x 11 1/8 x 3 in Kraft Deluxe Literature Mailer Crush Resistant 50/Bundle

PN: MFL17113K

17 1/8 x 11 1/8 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$131.89 / BUNDLE
IN STOCK Protect high-value documents and marketing materials with our deluxe 17 1/8 x 11 1/8 x 2
Boxes - Mailers

17 1/8 x 11 1/8 x 2 in Kraft Deluxe Literature Mailer Crush Resistant 50/Bundle

PN: MFL17112K

17 1/8 x 11 1/8 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$135.62 / BUNDLE
IN STOCK Protect high-value documents with our 16x16x2.75
Boxes - Mailers

16x16x2.75 Kraft Deluxe Literature Mailers 50-Pack

PN: MFL16162K

16 x 16 x 2 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$165.58 / BUNDLE
IN STOCK Professional 16
Boxes - Mailers

16x12x6 Kraft Literature Mailers 25-Pack

PN: MFL16126K

16 x 12 x 6 in ECT-32-B Corrugated 25 PER BUNDLE
$94.94 / BUNDLE
IN STOCK Protect high-value documents and marketing materials with our 16x12x4 deluxe kraft literature mailers. Built from heavy-duty ECT-32-B corrugated with reinforced side flaps and front tuck closure–no tape, glue, or staples required. Bundle of 50 ships ready to assemble.
Boxes - Mailers

16x12x4 Kraft Deluxe Literature Mailers 50-Pack

PN: MFL16124K

16 x 12 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$175.46 / BUNDLE
IN STOCK Professional 16x12x2 kraft literature mailers engineered for maximum document protection. Crush-resistant ECT-32-B corrugated construction with protective side flaps and front tuck closure assembles in seconds–no tape, glue, or staples required. Perfect for e-commerce brands shipping marketing materials, catalogs, and important documents.
Boxes - Mailers

16x12x2 Kraft Deluxe Literature Mailers 50/Bundle

PN: MFL16122K

16 x 12 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$124.57 / BUNDLE
IN STOCK Protect your brand with our 16x10x2.75
Boxes - Mailers

16x10x2.75 Kraft Corrugated Literature Mailers 50/Bundle

PN: MFL16102K

16 x 10 x 2 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$141.58 / BUNDLE
IN STOCK Professional deluxe kraft literature mailers designed for e-commerce brands that demand maximum document protection. Measuring 15 1/8
Boxes - Mailers

15 1/8 x 11 1/8 x 4 in Kraft Deluxe Literature Mailer 50/Bundle

PN: MFL15114K

15 1/8 x 11 1/8 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$157.23 / BUNDLE
IN STOCK Professional-grade kraft corrugated literature mailers designed to protect your most important documents in transit. Features protective side flaps and front outside tuck closure for secure, professional presentation. Assembles in seconds without tape, glue, or staples–50 boxes per bundle.
Boxes - Mailers

15 1/8 x 11 1/8 x 3 in Kraft Deluxe Literature Mailer 50-Pack

PN: MFL15113K

15 1/8 x 11 1/8 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$111.03 / BUNDLE
IN STOCK Professional-grade kraft literature mailers designed for e-commerce brands shipping important documents and marketing materials. Made from strong ECT-32-B corrugated, these 15 1/8x11 1/8x2 deluxe mailers feature protective side flaps and outside tuck closure for maximum protection–no tape, glue, or staples required. Bundle of 50 delivers consistent, cost-effective packaging.
Boxes - Mailers

15 1/8 x 11 1/8 x 2 in Kraft Deluxe Literature Mailer Crush Resistant 50-Pack

PN: MFL15112K

15 1/8 x 11 1/8 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$124.57 / BUNDLE
IN STOCK Professional-grade 14x14x4 kraft literature mailers engineered for maximum document protection in transit. Crush-resistant ECT-32-B corrugated construction with tuck-and-fold design assembles in seconds without tape, glue, or staples. Sold as bundle of 50.
Boxes - Mailers

14x14x4 Kraft Deluxe Literature Mailers 50/Bundle

PN: MFL14144K

14 x 14 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$157.99 / BUNDLE
IN STOCK Professional-grade 14x14x2 kraft corrugated literature mailers designed for e-commerce brands shipping important documents, marketing materials, and catalogs. Features protective side flaps, outside tuck closure, and maximum crush resistance with ECT-32-B strength. Assembles in seconds without tape, glue, or staples–50 boxes per bundle.
Boxes - Mailers

14x14x2 Kraft Deluxe Literature Mailers 50-Pack

PN: MFL14142K

14 x 14 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$89.63 / BUNDLE
IN STOCK Professional kraft corrugated literature mailers (14
Boxes - Mailers

14x10x3 Kraft Deluxe Literature Mailers 50-Pack

PN: MFL14103K

14 x 10 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$172.88 / BUNDLE
IN STOCK Ship documents and marketing materials with confidence using these 13x13x3 deluxe kraft corrugated mailers. Featuring protective side flaps, front tuck closure, and ECT-32-B strength, they assemble in seconds without tape, glue, or staples. Sold as a convenient bundle of 50.
Boxes - Mailers

13x13x3 Kraft Corrugated Literature Mailers 50-Pack MFL13133K

PN: MFL13133K

13 x 13 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$147.35 / BUNDLE
IN STOCK Professional kraft corrugated mailers designed for e-commerce brands shipping documents and catalogs with maximum protection. Deluxe side flaps and front tuck closure provide crush-resistant durability using ECT-32-B corrugated material. Assembles in seconds without tape, glue, or staples–50 mailers per bundle.
Boxes - Mailers

13x10x4 Kraft Corrugated Literature Mailers 50-Pack

PN: MFL13104K

13 x 10 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$150.39 / BUNDLE
IN STOCK Professional kraft corrugated literature mailers engineered for e-commerce brands shipping documents, catalogs, and flat goods. Features protective side flaps, front tuck closure, and ECT-32-B strength–no tape, glue, or staples required. 50-box bundle ready to assemble and ship.
Boxes - Mailers

13x10x2 Kraft Corrugated Literature Mailers 50/Bundle

PN: MFL13102K

13 x 10 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$106.34 / BUNDLE
IN STOCK Ship your most important documents with confidence using these deluxe kraft literature mailers. Built from crush-resistant ECT-32-B corrugated cardboard with protective side flaps and self-sealing tuck closure–no tape, glue, or staples required. Order your 50-pack bundle today for instant professional presentation.
Boxes - Mailers

12 1/8 x 9 1/4 x 4 in Kraft Deluxe Literature Mailer 50-Pack

PN: MFL1294K

12 1/8 x 9 1/4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$140.52 / BUNDLE
IN STOCK Protect your branded documents and marketing materials with these deluxe kraft corrugated literature mailers. Built from strong ECT-32-B corrugated material with protective side flaps and front tuck closure–assembles in seconds without tape or glue. Order your bundle of 50 today for professional presentation that reflects your brand.
Boxes - Mailers

12 1/8 x 9 1/4 x 3 in Kraft Corrugated Literature Mailers Crush Resistant 50/Bundle

PN: MFL1293K

12 1/8 x 9 1/4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$124.44 / BUNDLE
IN STOCK Professional-grade deluxe kraft literature mailers engineered for maximum document protection. Features protective side flaps, self-seal tuck closure, and crush-resistant ECT-32-B corrugated construction. Assembles in seconds without tape, glue, or staples–sold in convenient bundles of 50.
Boxes - Mailers

12 1/8 x 9 1/4 x 2 in Kraft Deluxe Literature Mailer Crush Resistant 50/Bundle

PN: MFL1292K

12 1/8 x 9 1/4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$101.11 / BUNDLE
IN STOCK Protect your documents with our 12x12x6 deluxe kraft corrugated literature mailers featuring protective side flaps and secure front tuck closure. Made from heavy-duty ECT-32-B corrugated material, these crush-resistant mailers assemble in seconds without tape, glue, or staples–sold as a convenient 50-pack bundle.
Boxes - Mailers

12x12x6 Kraft Corrugated Literature Mailers 50-Pack

PN: MFL12126K

12 x 12 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$250.20 / BUNDLE
IN STOCK Protect your most important documents with these 12x12x4 kraft deluxe literature mailers. Featuring protective side flaps, front tuck closure, and crush-resistant ECT-32-B corrugated construction. Assembles in seconds without tape or glue–50-pack bundle ready to ship.
Boxes - Mailers

12x12x4 Kraft Deluxe Literature Mailers 50-Pack

PN: MFL12124K

12 x 12 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$155.71 / BUNDLE
IN STOCK Ship important documents and marketing materials with confidence using these 12x12x2 kraft deluxe literature mailers. Built from strong ECT-32-B corrugated material with protective side flaps and front outside tuck closure for maximum protection without tape or glue. Assembles instantly–ideal for high-volume e-commerce brands requiring professional, crush-resistant mailers.
Boxes - Mailers

12x12x2 Kraft Deluxe Literature Mailers 50-Pack

PN: MFL12122K

12 x 12 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$151.15 / BUNDLE
IN STOCK Protect valuable documents and marketing materials with our 12x11x3 kraft deluxe literature mailers. Built from heavy-duty ECT-32-B corrugated with protective side flaps and front tuck closure–no tape, glue, or staples required. Ships as a convenient bundle of 50.
Boxes - Mailers

12x11x3 Kraft Deluxe Literature Mailers 50/Bundle

PN: MFL12113K

12 x 11 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$120.77 / BUNDLE
IN STOCK Ship premium documents and marketing collateral with maximum protection. These 12x10x6 deluxe kraft literature mailers feature reinforced side flaps and front tuck closure to prevent damage in transit. ECT-32-B corrugated construction delivers crush resistance while one-piece fold-and-tuck design assembles in seconds without tape, glue, or staples. Bundle of 50.
Boxes - Mailers

12x10x6 Kraft Corrugated Literature Mailers 50-Pack

PN: MFL12106K

12 x 10 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$189.89 / BUNDLE
IN STOCK Professional-grade kraft corrugated literature mailers designed for e-commerce brands shipping catalogs, brochures, and important documents. ECT-32-B construction delivers maximum crush resistance with a self-sealing tuck closure that requires no tape, glue, or staples. Bundle of 50 mailers ready to assemble in seconds.
Boxes - Mailers

12 1/8 x 9 1/4 x 6 in Kraft Deluxe Literature Mailer Crush Resistant 50-Pack

PN: MFL1296K

12 1/8 x 9 1/4 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$219.20 / BUNDLE
IN STOCK Professional 12x10x4 kraft deluxe literature mailers designed for e-commerce brands shipping documents, catalogs, and marketing materials. Featuring protective side flaps and front tuck closure for maximum protection without tape or glue. Sold as a bundle of 50 crush-resistant corrugated boxes.
Boxes - Mailers

12x10x4 Kraft Self-Seal Deluxe Literature Mailers 50-Pack

PN: MFL12104K

12 x 10 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$156.48 / BUNDLE
IN STOCK Professional-grade deluxe kraft literature mailers designed for e-commerce brands shipping documents, catalogs, and marketing materials. Features protective side flaps, self-sealing tuck closure, and strong ECT-32-B corrugated construction–no tape or glue required. Bundle of 50 boxes (11.75
Boxes - Mailers

11.75x10.75x2.25 Kraft Deluxe Literature Mailers 50/Bundle

PN: MFL3RBK

11 3/4 x 10.75 x 2 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$105.54 / BUNDLE
IN STOCK Professional kraft corrugated literature mailers built for maximum document protection. Featuring self-sealing tuck closure and protective side flaps, these 11 1/8x8 3/4x5
Boxes - Mailers

11 1/8 x 8 3/4 x 5 in Kraft Literature Mailer Crush Resistant 50/Bundle

PN: MFL1185K

11 1/8 x 8 3/4 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$176.40 / BUNDLE
IN STOCK Professional deluxe kraft literature mailers that arrive pristine every time. Featuring protective side flaps and self-seal tuck closure, these 11 1/8
Boxes - Mailers

11 1/8 x 8 3/4 x 4 in Kraft Deluxe Literature Mailer Crush Resistant 50/Bundle

PN: MFL1184K

11 1/8 x 8 3/4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$117.73 / BUNDLE
IN STOCK 11 1/8 x 8 3/4 x 3
Boxes - Mailers

11 1/8 x 8 3/4 x 3 in Kraft Corrugated Literature Mailer 50-Pack

PN: MFL1183K

11 1/8 x 8 3/4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$108.49 / BUNDLE
IN STOCK 11 1/8 x 8 3/4 x 2
Boxes - Mailers

11 1/8 x 8 3/4 x 2 in Kraft Deluxe Literature Mailer Crush Resistant 50/Bundle

PN: MFL1182K

11 1/8 x 8 3/4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$96.12 / BUNDLE
IN STOCK Protect your most important documents with these 10x10x5 kraft deluxe literature mailers featuring crush-resistant ECT-32-B corrugated construction. Front outside tuck closure and protective side flaps keep contents secure and professional. Assembles in seconds without tape, glue, or staples–sold as a bundle of 50.
Boxes - Mailers

10x10x5 Kraft Deluxe Literature Mailers 50/Bundle

PN: MFL10105K

10 x 10 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$153.43 / BUNDLE
IN STOCK 10x10x4
Boxes - Mailers

10x10x4 Kraft Corrugated Literature Mailers 50/Bundle

PN: MFL10104K

10 x 10 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$118.49 / BUNDLE
IN STOCK Professional-grade 10x10x3 kraft corrugated mailer designed for e-commerce brands shipping important documents and products. Features protective side flaps, front tuck closure, and crush-resistant ECT-32-B construction. Assembles in seconds without tape, glue, or staples–50 boxes per bundle.
Boxes - Mailers

10x10x3 Kraft Corrugated Literature Mailers 50-Pack

PN: MFL10103K

10 x 10 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$115.88 / BUNDLE
IN STOCK 10x10x2 Kraft Literature Mailer, 50/Bundle
Boxes - Mailers

10x10x2 Kraft Deluxe Literature Mailers 50/Bundle

PN: MFL10102K

10 x 10 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$70.79 / BUNDLE
IN STOCK 10x8x1.5
Boxes - Mailers

10x8x1.5 Kraft Corrugated Literature Mailers 50-Pack

PN: MFL1081K

10 x 8 x 1 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$54.69 / BUNDLE
IN STOCK Professional 10x4x4 kraft corrugated literature mailers designed for e-commerce brands who demand document protection without compromises. Features protective side flaps, front tuck closure, and crush-resistant ECT-32-B construction. Assembles in seconds–no tape, glue, or staples required. Bundle of 50.
Boxes - Mailers

10x4x4 Kraft Corrugated Literature Mailers 50-Pack

PN: MFL1044K

10 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$102.83 / BUNDLE
IN STOCK Protect your branded documents and marketing collateral with these 9x6.25x4 kraft deluxe literature mailers. Built from heavy-duty ECT-32-B corrugated cardboard with side flaps and front tuck closure for maximum crush resistance. Assemble in seconds without tape, glue, or staples–50 mailers per bundle.
Boxes - Mailers

9x6.25x4 Kraft Deluxe Literature Mailers 50-Pack

PN: MFL964K

9 x 6.25 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$102.54 / BUNDLE
IN STOCK Ship marketing materials and documents with confidence using these crush-resistant kraft corrugated mailers. Designed with protective side flaps and front-tuck self-seal closure, they assemble in seconds without tape, glue, or staples–perfect for e-commerce brands managing high-volume shipments. Bundle of 50.
Boxes - Mailers

9x6.25x3 Kraft Corrugated Literature Mailers 50-Pack

PN: MFL963K

9 x 6.25 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$55.45 / BUNDLE
IN STOCK Protect your brand reputation with these crush-resistant 9x6.25x2 kraft deluxe literature mailers. Built from sturdy ECT-32-B corrugated material with integrated fold-and-tuck closure–no tape, glue, or staples required. Bundle of 50 units ready to ship.
Boxes - Mailers

9x6.25x2 Kraft Deluxe Literature Mailers 50-Pack

PN: MFL962K

9 x 6.25 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$63.80 / BUNDLE
IN STOCK Professional-grade 8x8x2.75
Boxes - Mailers

8x8x2.75 Kraft Deluxe Literature Mailers 50/Bundle

PN: MFL882K

8 x 8 x 2 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$64.56 / BUNDLE
IN STOCK Professional 4x4x4 deluxe kraft literature mailers designed to protect documents and promotional materials in transit. Featuring protective side flaps, front outside tuck closure, and crush-resistant ECT-32-B corrugated construction. Assembles tool-free in seconds–50 boxes per bundle.
Boxes - Mailers

4x4x4 Kraft Deluxe Literature Mailers 50/Bundle

PN: MFL444K

4 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$74.54 / BUNDLE
IN STOCK Secure self-seal white corrugated mailers designed for e-commerce brands shipping documents, literature, and small products. These 12 1/8 x 9 1/8 x 2
Boxes - Mailers

12 1/8 x 9 1/8 x 2 in White Corrugated Easy-Fold Mailers 25-Pack

PN: M2BKSS

12 1/8 x 9 1/8 x 2 in ECT-32-B Corrugated 25 PER BUNDLE
$86.59 / BUNDLE

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