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 marketing collateral and product literature with professional protection. These 9x6.5x4 white corrugated mailers feature self-sealing tabs for quick assembly–no extra supplies needed. ECT-32-B crush-resistant construction ensures your content arrives pristine, sold in convenient 50-piece bundles.
Boxes - Mailers

9x6.5x4 White Corrugated Literature Mailers 50/Bundle

PN: ML964

9 x 6.5 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$85.07 / BUNDLE
IN STOCK Professional white corrugated literature mailers sized 9
Boxes - Mailers

9x6.5x2.75 White Corrugated Literature Mailers 50-Pack

PN: M962

9 x 6.5 x 2 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$45.01 / BUNDLE
IN STOCK Ship catalogs, brochures, and marketing materials with confidence using these 9x6.5x1.75 white corrugated literature mailers. Engineered with ECT-32-B crush-resistant construction and self-sealing tabs that fit snugly for secure closure. Bundle of 50–ready to assemble with zero additional supplies.
Boxes - Mailers

9x6.5x1.75 White Corrugated Literature Mailers 50-Pack

PN: ML961

9 x 6.5 x 1 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$51.65 / BUNDLE
IN STOCK Professional white corrugated literature mailers sized 9
Boxes - Mailers

9x6.25x4 White Corrugated Literature Mailers 50-Pack M964

PN: M964

9 x 6.25 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$76.71 / BUNDLE
IN STOCK Professional 9
Boxes - Mailers

9x4x3 White Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML943

9 x 4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$53.17 / BUNDLE
IN STOCK Ship branded materials with professional presentation using these 8
Boxes - Mailers

8x8x4 ECT-32-B White Corrugated Literature Mailers 50-Pack

PN: ML884

8 x 8 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$71.40 / BUNDLE
IN STOCK Ship literature with professional presentation using these 8x8x2 white corrugated mailers. Strong ECT-32-B construction delivers crush-resistant protection, while integrated tuck tabs ensure secure closure without additional supplies. Bundle of 50 mailers ready to fold and ship.
Boxes - Mailers

8x8x2 White Corrugated Literature Mailers

PN: ML882

8 x 8 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$47.09 / BUNDLE
IN STOCK Ship professional literature and branded materials with confidence using these 8x8x1.25
Boxes - Mailers

8x8x1.25 White Corrugated Literature Mailers 50-Pack

PN: ML881

8 x 8 x 1 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$44.81 / BUNDLE
IN STOCK ECT-32-B white corrugated literature mailers designed for e-commerce brands who need professional, crush-resistant packaging without custom tooling. Pre-sized 8x7x4 dimensions with self-sealing tabs ensure secure closure and polished presentation. Bundle of 50 boxes arrives ready to fold, assemble, and ship.
Boxes - Mailers

8x7x4 White Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML874

8 x 7 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$103.58 / BUNDLE
IN STOCK Ship marketing materials, catalogs, and documents with professional confidence using these 8x7x3 white corrugated literature mailers. ECT-32-B crush-resistant construction with secure self-sealing tabs requires zero assembly supplies. Perfect for e-commerce brands seeking cost-effective, ready-to-use mailing solutions in convenient 50-pack bundles.
Boxes - Mailers

8x7x3 White Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML873

8 x 7 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$54.69 / BUNDLE
IN STOCK Professional 8
Boxes - Mailers

8x7x2 ECT-32-B White Corrugated Literature Mailers 50-Pack

PN: ML872

8 x 7 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$44.05 / BUNDLE
IN STOCK Professional white corrugated literature mailers designed for e-commerce brands shipping catalogs, brochures, and promotional materials. Pre-sized 7.5 x 7 x 3.25
Boxes - Mailers

7.5x7x3.25 White Corrugated Literature Mailers 50/Bundle

PN: MIBM1M

7 1/2 x 7 x 3 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$57.86 / BUNDLE
IN STOCK Ship literature, catalogs, and marketing materials with professional-grade white corrugated mailers designed for secure, damage-free delivery. These 7 3/8 x 7 3/8 x 1 3/8 fold-and-tuck literature mailers feature ECT-32-B strength, integrated self-sealing tabs, and quick assembly. One bundle of 50 ready-to-use corrugated mailer boxes.
Boxes - Mailers

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

PN: MMC1

7 3/8 x 7 3/8 x 1 3/8 in ECT-32-B Corrugated 50 PER BUNDLE
$30.77 / BUNDLE
IN STOCK Ship marketing materials and catalogs with professional presentation and maximum protection. These white corrugated mailers feature self-sealing tabs, ECT-32-B crush-resistant construction, and require zero additional supplies for quick assembly. Sold as a bundle of 50 ready-to-use pieces.
Boxes - Mailers

7 1/8 x 4 1/2 x 3 in White Corrugated Literature Mailers Self-Seal 50/Bundle

PN: ML743

7 1/8 x 4 1/2 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$47.09 / BUNDLE
IN STOCK Ship marketing materials, catalogs, and brochures with professional confidence using these 7x7x2 white corrugated literature mailers. ECT-32-B crush-resistant construction with snug-fitting self-seal tabs delivers secure closure without additional packing supplies. Sold as a bundle of 50 for maximum value.
Boxes - Mailers

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

PN: ML772

7 x 7 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$41.78 / BUNDLE
IN STOCK Ship professional marketing materials without custom box costs. These 7x3.625x2.125 white corrugated mailers feature secure fold-and-tuck closure, crush-resistant ECT-32-B construction, and require zero additional supplies. Perfect fit for catalogs, brochures, and promotional inserts–ready to assemble and mail in minutes.
Boxes - Mailers

7x3.625x2.125 White Corrugated Literature Mailers 50-Pack

PN: ML732

7 x 3.625 x 2 1/8 in ECT-32-B Corrugated 50 PER BUNDLE
$31.90 / BUNDLE
IN STOCK Ship your marketing materials with professional impact. These 6x6x2
Boxes - Mailers

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

PN: ML662

6 x 6 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$70.12 / BUNDLE
IN STOCK Professional-grade white literature mailers designed for e-commerce brands shipping branded content, catalogs, and promotional materials. Features ECT-32-B corrugated construction with snug-fitting self-seal tabs that require no additional supplies. Sold in convenient 50-pack bundles for immediate deployment.
Boxes - Mailers

6x6x1.25 White Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML661

6 x 6 x 1 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$33.42 / BUNDLE
IN STOCK Perfect-fit 5x3x2 white literature mailers eliminate custom carton costs while maintaining professional presentation. Strong ECT-32-B corrugated construction with self-locking tabs ensures secure closure–no additional supplies required. Sold as a convenient bundle of 50.
Boxes - Mailers

5x3x2 ECT-32-B White Corrugated Literature Mailers

PN: ML532

5 x 3 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$31.90 / BUNDLE
IN STOCK Professional 4x4x4
Boxes - Mailers

4x4x4 White Self-Seal Corrugated Literature Mailers 50/Bundle

PN: ML444

4 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$44.81 / BUNDLE
IN STOCK Professional-grade 24x24x2 white corrugated easy-fold mailers protect flat items like framed art and documents during shipment. Multi-depth scored construction allows flexible folding to your exact needs. ECT-32-B material delivers crush resistance with an oyster white finish that impresses recipients.
Boxes - Mailers

24x24x2 White Corrugated Easy-Fold Mailers 20-Pack

PN: M24242BF

24 x 24 x 2 in ECT-32-B Corrugated 20 PER BUNDLE
$108.20 / BUNDLE
IN STOCK Professional 24x18x2
Boxes - Mailers

24x18x2 White Corrugated Mailers 50-Pack

PN: M24182BF

24 x 18 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$187.99 / BUNDLE
IN STOCK Professional-grade white corrugated mailers sized 20
Boxes - Mailers

20x16x2 White Corrugated Mailers 50-Pack

PN: M20162BF

20 x 16 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$182.56 / BUNDLE
IN STOCK Ship flat materials with professional polish using these 18x18x2 white corrugated easy-fold mailers. ECT-32-B construction provides crush resistance and durability, while multi-depth scoring lets you customize fold depth for perfect fits. Each bundle includes 50 mailers ready to pack, fold, and seal.
Boxes - Mailers

18x18x2 White Corrugated Mailers 50-Pack

PN: M18182BF

18 x 18 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$241.34 / BUNDLE
IN STOCK Protect and present your flat shipments with professional white corrugated easy-fold mailers. These 18x12x2 die-cut mailers feature multi-depth scoring for flexible folding and superior crush resistance. Includes 50 mailers per bundle.
Boxes - Mailers

18x12x2 White Corrugated Mailers 50-Pack

PN: M18122BF

18 x 12 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$127.42 / BUNDLE
IN STOCK Professional-grade white corrugated easy-fold mailers sized 17.25
Boxes - Mailers

17.25x11.25x2 White Corrugated Mailers 50-Pack

PN: M17112BF

17 1/4 x 11.25 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$101.11 / BUNDLE
IN STOCK Ship with confidence using these ECT-32-B white corrugated mailers that combine professional presentation with reliable crush resistance. Pre-scored at multiple depths for flexible folding, these easy-fold mailers accommodate items 2
Boxes - Mailers

17 1/8 x 14 1/8 x 2 in White Corrugated Easy-Fold Mailers 50-Pack

PN: M4BK

17 1/8 x 14 1/8 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$94.94 / BUNDLE
IN STOCK Professional-grade white corrugated easy-fold mailers designed for e-commerce brands shipping flat materials like prints and artwork. These 15x11.125x6 crush-resistant mailers feature multi-depth scoring for flexible folding and secure self-seal closure. Sold in bundles of 50 for consistent, cost-effective shipping.
Boxes - Mailers

15x11.125x6 White Corrugated Mailers 50-Pack

PN: M15116BF

15 x 11.125 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$161.63 / BUNDLE
IN STOCK Ship flat materials with professional polish using these 15
Boxes - Mailers

15x11.125x2 White Corrugated Easy-Fold Mailers 50-Pack

PN: MIBMROS

15 x 11.125 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$71.40 / BUNDLE
IN STOCK Ship flat materials with confidence using these 14.25x11.25x2 white corrugated easy-fold mailers. Multi-depth scoring lets you customize fold depth, while ECT-32-B construction delivers crush-resistant protection and professional appearance. Sold in bundles of 50.
Boxes - Mailers

14.25x11.25x2 White Corrugated Mailers 50-Pack

PN: M14112BF

14 1/4 x 11.25 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$112.52 / BUNDLE
IN STOCK Ship flat materials with confidence using these 14 1/8
Boxes - Mailers

14x8.6x2 White Corrugated Mailers 50-Pack

PN: M1482BF

14 x 8.6 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$137.28 / BUNDLE
IN STOCK Professional-grade white corrugated mailers designed for e-commerce brands shipping flat items like prints, photos, and documents. Features multi-depth scoring for flexible folding and ECT-32-B crush-resistant construction. Sold as a bundle of 50 with tape-seal closure for reliable, polished brand presentation.
Boxes - Mailers

14 1/8 x 8 5/8 x 1 in White Corrugated Easy-Fold Mailers 50/Bundle

PN: M1491

14 1/8 x 8 5/8 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$63.80 / BUNDLE
IN STOCK Professional-grade 14x14x4 white corrugated easy-fold mailers designed for e-commerce brands shipping flat materials, artwork, and photographs. Multi-depth scoring lets you customize box depth, while ECT-32-B corrugated construction provides superior crush resistance. Bundle of 50 mailers ready to ship.
Boxes - Mailers

14x14x4 White Corrugated Mailers 50-Pack

PN: M14144BF

14 x 14 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$168.40 / BUNDLE
IN STOCK Professional white corrugated easy-fold mailers designed for e-commerce brands shipping flat items like framed pictures, prints, and documents. Multi-depth scoring at 12.5x12.5x2 allows custom folding from 2
Boxes - Mailers

12.5x12.5x2 White Corrugated Mailers 50-Pack

PN: M12122BF

12 1/2 x 12 1/2 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$64.56 / BUNDLE
IN STOCK Ship flat materials with confidence using these 12.5x12.5x1 white corrugated easy-fold mailers. Multi-depth scoring lets you customize box height from 1
Boxes - Mailers

12.5x12.5x1 White Corrugated Mailers 50-Pack

PN: M12121

12 1/2 x 12 1/2 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$54.51 / BUNDLE
IN STOCK Ship with confidence using our crush-resistant white corrugated easy-fold mailers. These professional 12 1/8 x 9 1/8 x 4
Boxes - Mailers

12 1/8 x 9 1/8 x 4 in White Corrugated Easy-Fold Mailers 50-Pack

PN: M2BKXL

12 1/8 x 9 1/8 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$113.26 / BUNDLE
IN STOCK Professional-grade white corrugated mailers with multi-depth fold scoring for flexible packaging. ECT-32-B corrugated construction delivers crush resistance and protection for flat materials like framed artwork and prints. Bundle of 50 mailers ready to seal and ship.
Boxes - Mailers

12 1/8 x 9 1/8 x 3 in White Corrugated Easy-Fold Mailers 50/Bundle

PN: M1293BF

12 1/8 x 9 1/8 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$157.97 / BUNDLE
IN STOCK Ship with confidence using these 12 1/8x9 1/8x2 white corrugated easy-fold mailers–crush-resistant ECT-32-B material delivers professional appearance every time. Multi-depth scoring lets you fold to your exact specifications. 50-pack bundle ready to go.
Boxes - Mailers

12 1/8 x 9 1/8 x 2 in White Corrugated Easy-Fold Mailers 50-Pack

PN: M2BK

12 1/8 x 9 1/8 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$47.12 / BUNDLE
IN STOCK Ship your products with professional polish using these 12 1/8 x 9 1/8 x 1
Boxes - Mailers

12 1/8 x 9 1/8 x 1 in White Corrugated Easy-Fold Mailers 50-Pack

PN: M1291

12 1/8 x 9 1/8 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$43.05 / BUNDLE
IN STOCK Ship flat materials with confidence using these 12x11.5x3 white corrugated easy-fold mailers. Multi-depth scoring lets you customize fold depth while ECT-32-B construction provides crush-resistant protection. Professional presentation guaranteed–sold in bundles of 50.
Boxes - Mailers

12x11.5x3 White Corrugated Mailers 50-Pack

PN: M12113BF

12 x 11.5 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$153.52 / BUNDLE
IN STOCK Professional white corrugated easy-fold mailers designed for e-commerce brands shipping flat materials like framed pictures and artwork. Multi-depth scoring provides flexible folding options while ECT-32-B construction delivers crush-resistant protection. 50-pack bundle of 12x10.5x2 cardboard mailers with self-seal tape compatibility.
Boxes - Mailers

12x10.5x2 White Corrugated Mailers 50-Pack

PN: M12102BF

12 x 10.5 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$113.26 / BUNDLE
IN STOCK Professional-grade white corrugated easy-fold mailers designed for e-commerce brands shipping flat materials. Multi-depth scoring scored at multiple depths flexibly accommodates items from 1-3
Boxes - Mailers

12x9x3 White Corrugated Mailers 50-Pack

PN: M12932BF

12 x 9 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$116.24 / BUNDLE
IN STOCK Professional-grade white corrugated easy-fold mailers designed for e-commerce brands shipping flat materials like framed pictures and artwork. Multi-depth scoring allows flexible folding at your desired depth, while ECT-32-B material provides crush resistance and a polished appearance. Bundle of 50 mailers ready to ship.
Boxes - Mailers

11.75x10.5x2.25 White Corrugated Mailers 50-Pack

PN: M11102BF

11 3/4 x 10.5 x 2.25 in ECT-32-B Corrugated 50 PER BUNDLE
$101.11 / BUNDLE
IN STOCK 11 1/8 x 8 5/8 x 4
Boxes - Mailers

11 1/8 x 8 5/8 x 4 in White Corrugated Easy-Fold Mailers 50-Pack

PN: M1BKXL

11 1/8 x 8 5/8 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$78.99 / BUNDLE
IN STOCK 11 1/8 x 8 5/8 x 2
Boxes - Mailers

11 1/8 x 8 5/8 x 2 in White Corrugated Easy-Fold Mailers 50-Pack

PN: M1BK

11 1/8 x 8 5/8 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$48.61 / BUNDLE
IN STOCK Professional-grade 11x8.5x3 white corrugated mailers designed for e-commerce brands shipping flat items like prints and documents. Multi-depth score lines enable custom folding for flexible packing depths–place product, fold sides, seal with tape. Crush-resistant ECT-32-B construction protects contents while maintaining a polished, branded appearance. Sold as a bundle of 50.
Boxes - Mailers

11x8.5x3 White Corrugated Mailers 50-Pack

PN: M1183BF

11 x 8.5 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$109.23 / BUNDLE
IN STOCK 10.25x10.25x1 White Corrugated Easy-Fold Mailers, 50-Pack
Boxes - Mailers

10.25x10.25x1 White Corrugated Mailers 50-Pack

PN: M10101

10 1/4 x 10 1/4 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$43.29 / BUNDLE
IN STOCK 10.25x8.25x1.25
Boxes - Mailers

10.25x8.25x1.25 White Corrugated Mailers 50-Pack

PN: M1081

10 1/4 x 8.25 x 1 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$40.26 / BUNDLE

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