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 White Mailers 20/Bundle
Boxes - Mailers

12x9x3 White Mailers 20/Bundle

PN: M1293RP20

12.125 x 9.25 x 3 in 20 PER BUNDLE
$45.75 / EACH
IN STOCK Professional side-loading mailers with integrated locking tabs eliminate the need for tape or adhesive, saving time and reducing packaging costs. Made from sturdy ECT-32-B corrugated material, these white shipping cartons offer crush-resistant protection for e-commerce fulfillment. Ships flat to maximize storage efficiency and minimize freight expenses for bulk orders.
Boxes - Mailers

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

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 11 1/8x8 5/8x2 1/2
Boxes - Mailers

11 1/8 x 8 5/8 x 2 1/2 in White Corrugated Side Load Locking Mailers 50/Bundle

PN: MAL1182

11 1/8 x 8 5/8 x 2 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$32.66 / BUNDLE
IN STOCK Premium 30x24x4 white corrugated literature mailers engineered for e-commerce brands who demand professional presentation without custom carton costs. ECT-32-B construction delivers crush-resistant protection, while integrated tabs ensure secure closure–no additional supplies needed. Sold as a convenient 25-pack bundle.
Boxes - Mailers

30x24x4 White Corrugated Literature Mailers 25-Pack

PN: ML30244

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

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

PN: ML23132

23 x 13 x 2 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$144.31 / BUNDLE
IN STOCK Professional white corrugated literature mailers sized 19
Boxes - Mailers

19x12x2.5 ECT-32-B White Corrugated Literature Mailers 50-Pack

PN: ML19122

19 x 12 x 2 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$121.53 / BUNDLE
IN STOCK Ship your literature and catalogs with confidence using these 18x18x2 white corrugated mailers. Heavy-duty ECT-32-B construction resists crushing and damage in transit, while snug-fitting tabs seal securely without tape or additional supplies. Perfect for e-commerce brands seeking professional presentation at standard costs–25 mailers per bundle.
Boxes - Mailers

18x18x2 White Self-Seal Corrugated Literature Mailers 25-Pack

PN: ML18182

18 x 18 x 2 in ECT-32-B Corrugated 25 PER BUNDLE
$68.36 / BUNDLE
IN STOCK Professional-grade 18
Boxes - Mailers

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

PN: ML18123

18 x 12 x 3 in ECT-32-B Corrugated 25 PER BUNDLE
$58.49 / BUNDLE
IN STOCK Premium white literature mailers in 17.25x11.25x6 dimensions featuring ECT-32-B crush-resistant corrugated construction. One-piece fold-and-tuck design assembles instantly with secure tab closure–no additional supplies needed. Perfect for e-commerce brands shipping catalogs, brochures, and marketing materials. 25-pack bundle.
Boxes - Mailers

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

PN: ML17116

17 1/4 x 11.25 x 6 in ECT-32-B Corrugated 25 PER BUNDLE
$101.02 / BUNDLE
IN STOCK Save on custom carton costs with these ready-to-ship 17.25x11.25x4 white literature mailers. Features strong ECT-32-B corrugated construction with snug-fitting tabs for secure closure–no additional supplies needed. Sold as a bundle of 25 for maximum value.
Boxes - Mailers

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

PN: ML17114

17 1/4 x 11.25 x 4 in ECT-32-B Corrugated 25 PER BUNDLE
$66.08 / BUNDLE
IN STOCK Ship your marketing materials in professional style with these 17 1/8x11 1/8x5
Boxes - Mailers

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

PN: M17115

17 1/8 x 11 1/8 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$165.42 / BUNDLE
IN STOCK Professional-grade white literature mailers designed for e-commerce brands who need crush-resistant shipping without custom tooling costs. Features ECT-32-B corrugated construction with secure fold-and-tuck closure and quick assembly–no additional supplies required. Sold as a bundle of 50.
Boxes - Mailers

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

PN: M17114

17 1/8 x 11 1/8 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$137.85 / BUNDLE
IN STOCK Crush-resistant white corrugated literature mailers in 17 1/8x11 1/8x3 dimensions–the cost-effective alternative to custom cartons. ECT-32-B construction with self-sealing tabs requires no additional supplies. Sold in bundles of 50 for immediate dispatch.
Boxes - Mailers

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

PN: M17113

17 1/8 x 11 1/8 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$111.03 / BUNDLE
IN STOCK Ready-to-ship white corrugated literature mailers that require zero assembly time. Snug-fitting tabs deliver professional presentation with secure self-seal closure–no tape, no hassle. ECT-32-B crush-resistant construction protects contents while you impress customers with every delivery.
Boxes - Mailers

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

PN: M17112

17 1/8 x 11 1/8 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$87.35 / BUNDLE
IN STOCK Professional 17x11x2.5
Boxes - Mailers

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

PN: ML17112

17 x 11 x 2 1/2 in ECT-32-B Corrugated 25 PER BUNDLE
$53.55 / BUNDLE
IN STOCK Professional white corrugated literature mailers sized 16
Boxes - Mailers

16x16x4 White Corrugated Literature Mailers 25-Pack

PN: ML16164

16 x 16 x 4 in ECT-32-B Corrugated 25 PER BUNDLE
$91.91 / BUNDLE
IN STOCK Ship catalogs, brochures, and promotional materials with confidence using these 16x16x2 white literature mailers. Featuring ECT-32-B corrugated construction and integrated self-seal tabs for secure closure without additional supplies. Sold as a bundle of 50 ready-to-use mailers.
Boxes - Mailers

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

PN: ML16162

16 x 16 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$123.81 / BUNDLE
IN STOCK Professional white corrugated literature mailers in 16
Boxes - Mailers

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

PN: ML16123

16 x 12 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$124.57 / BUNDLE
IN STOCK Professional-grade 16x10x3 white corrugated mailers designed for e-commerce brands shipping catalogs, brochures, and marketing materials. Self-sealing tabs provide secure closure without additional supplies, while ECT-32-B corrugated construction ensures crush resistance during transit. Bundle of 50 ready to fold and ship.
Boxes - Mailers

16x10x3 White Corrugated Literature Mailers 50/Bundle

PN: ML16103

16 x 10 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$107.86 / BUNDLE
IN STOCK Professional white corrugated mailers sized 16x8x4 for literature, catalogs, and promotional materials. Self-sealing tabs secure contents without additional supplies–quick assembly, crush-resistant ECT-32-B construction. Ships in convenient 50-pack bundles for cost-effective shipping.
Boxes - Mailers

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

PN: ML1684

16 x 8 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$110.14 / BUNDLE
IN STOCK Professional 16x8x3 white corrugated literature mailers designed for e-commerce brands who need reliable, cost-effective shipping without custom tooling. ECT-32-B crush-resistant construction with secure fold-and-tuck closure. Bundle of 50 ready to ship.
Boxes - Mailers

16x8x3 White Corrugated Literature Mailers 50-Pack

PN: ML1683

16 x 8 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$86.59 / BUNDLE
IN STOCK Ship marketing materials and catalogs with professional white corrugated literature mailers sized 15 1/8x11 1/8x5. Each bundle includes 50 crush-resistant fold-and-tuck mailers featuring secure self-sealing tabs–no additional supplies needed. ECT-32-B construction delivers the durability your e-commerce brand demands.
Boxes - Mailers

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

PN: M15115

15 1/8 x 11 1/8 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$231.74 / BUNDLE
IN STOCK Professional-grade white literature mailers with self-sealing tabs and crush-resistant ECT-32-B corrugated construction. Size 15 1/8 x 11 1/8 x 4 inches fits standard brochures and documents without expensive custom solutions. Bundle of 50 ready for immediate use.
Boxes - Mailers

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

PN: MIBMS1000

15 1/8 x 11 1/8 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$113.79 / BUNDLE
IN STOCK Premium white corrugated literature mailers in 15 1/8x11 1/8x3
Boxes - Mailers

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

PN: M15113

15 1/8 x 11 1/8 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$97.22 / BUNDLE
IN STOCK Ship marketing materials and literature with professional impact using these white corrugated mailers. Featuring ECT-32-B crush-resistant construction and self-sealing tabs for secure closure, this 50-pack delivers reliable protection without custom costs. Quick fold-and-tuck assembly requires no additional supplies.
Boxes - Mailers

15 1/8 x 11 1/8 x 2 in White Corrugated Literature Mailers 50-Pack

PN: MIBMS500

15 1/8 x 11 1/8 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$77.47 / BUNDLE
IN STOCK Professional 15x12x2 white corrugated literature mailers engineered for e-commerce brands who need reliable, cost-effective shipping solutions. Heavy-duty ECT-32-B construction provides crush-resistant protection with no assembly supplies required–tabs tuck securely for a polished presentation. Bundle of 50 ready to ship.
Boxes - Mailers

15x12x2 White Corrugated Literature Mailers 50-Pack

PN: ML15122

15 x 12 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$104.82 / BUNDLE
IN STOCK Ship marketing materials and documents with confidence using these 14.25x11.25x2 white corrugated literature mailers. Featuring secure self-closing tabs, ECT-32-B crush-resistant construction, and one-piece folding design–no additional supplies required. Pack of 50 ready to deploy.
Boxes - Mailers

14.25x11.25x2 White Corrugated Literature Mailers 50-Pack

PN: ML14112

14 1/4 x 11.25 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$102.54 / BUNDLE
IN STOCK Professional-grade white corrugated literature mailers featuring self-sealing tabs that fit snugly for secure closure every time. Strong ECT-32-B construction protects contents during shipping. Pre-sized 14 1/8 x 8 3/4 x 2 dimensions eliminate custom carton costs–sold as a convenient 50-pack bundle with quick fold-and-tuck assembly.
Boxes - Mailers

14 1/8 x 8 3/4 x 2 in White Corrugated Literature Mailers Self-Seal 50/Bundle

PN: ML1482

14 1/8 x 8 3/4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$101.78 / BUNDLE
IN STOCK Ship marketing materials and promotional content with professional white corrugated mailers that require zero assembly supplies. These 14x14x5 literature mailers feature ECT-32-B crush-resistant construction with self-sealing tabs for secure closure. Sold in bundles of 50–the cost-effective alternative to custom cartons.
Boxes - Mailers

14x14x5 White Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML14145

14 x 14 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$173.94 / BUNDLE
IN STOCK Professional 14
Boxes - Mailers

14x14x4 White Corrugated Literature Mailers 50-Pack

PN: M14144

14 x 14 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$147.35 / BUNDLE
IN STOCK Professional 14x14x3 white literature mailers with snug self-sealing tabs and no assembly required. ECT-32-B corrugated construction provides crush resistance for secure product protection during shipping. Perfect for e-commerce brands seeking cost-effective, branded mailers without custom tooling.
Boxes - Mailers

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

PN: ML14143

14 x 14 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$122.29 / BUNDLE
IN STOCK Ready-to-use 14
Boxes - Mailers

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

PN: M14142

14 x 14 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$107.10 / BUNDLE
IN STOCK Ship branded literature and marketing materials with professional white corrugated mailers that require zero assembly time. These 14
Boxes - Mailers

14x12x4 White Corrugated Literature Mailers 50-Pack

PN: ML14124

14 x 12 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$125.33 / BUNDLE
IN STOCK Professional-grade 14
Boxes - Mailers

14x10x2 White Self-Seal Corrugated Literature Mailers 50/Bundle

PN: ML14102

14 x 10 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$102.54 / BUNDLE
IN STOCK Professional-grade white corrugated literature mailers measuring 14
Boxes - Mailers

14x3.75x2.75 White Corrugated Literature Mailers 50/Bundle

PN: ML1432

14 x 3.75 x 2 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$71.40 / BUNDLE
IN STOCK Professional 13x13x4 white corrugated mailers designed for e-commerce brands shipping catalogs, brochures, and marketing materials. Features secure self-sealing tabs and durable ECT-32-B construction that resists crushing. Quick one-piece assembly–no additional supplies required. Sold in bundles of 50.
Boxes - Mailers

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

PN: ML13134

13 x 13 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$130.64 / BUNDLE
IN STOCK Ship catalogs, brochures, and marketing materials in professional style with these 13x13x3 white literature mailers. ECT-32-B corrugated construction delivers crush resistance and reliable protection. Quick fold-and-tuck assembly with secure self-sealing tabs–no tape or additional supplies required. Sold in bundles of 50.
Boxes - Mailers

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

PN: ML13133

13 x 13 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$113.93 / BUNDLE
IN STOCK Professional 13x13x2 white corrugated literature mailers designed for e-commerce brands who ship catalogs, brochures, and promotional materials. Strong ECT-32-B corrugated construction with secure fold-and-tuck tabs requires zero additional supplies–just assemble and ship. Sold in convenient 50-pack bundles for reliable, cost-effective mailouts.
Boxes - Mailers

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

PN: ML13132

13 x 13 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$102.54 / BUNDLE
IN STOCK Professional white literature mailers sized at 13
Boxes - Mailers

13x10x4 White Self-Seal Corrugated Literature Mailers 50-Pack

PN: M13104

13 x 10 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$113.17 / BUNDLE
IN STOCK Professional white side loading stayflat mailers engineered for e-commerce brands shipping documents and photos. .028 chipboard construction with peel-and-seal closure and pull-tab tear strip for effortless opening. Lightweight design reduces postage costs without sacrificing protection–100 per case.
Envelopes & Mailers

9.75x12.25 White Self-Seal Side Loading Chipboard Stayflats Lite Mailers 100/Case

PN: RM129

9 3/4 x 12.25 in .028 Chipboard 100 PER CASE
$80.99 / CASE
IN STOCK Protect documents and photos with confidence using our 6x9 white chipboard side loading Stayflats Lite® mailers. These self-seal, self-adhesive mailing flats feature a peel-and-seal closure with pull-tab tear strip for hassle-free sealing and opening. Sold as a case of 200 lightweight mailers that require no additional stiffeners.
Envelopes & Mailers

6x9 White Side Loading Chipboard Stayflats Lite Mailers 200/Case

PN: RM19SS

6 x 9 in .024 Chipboard 200 PER CASE
$104.65 / CASE
IN STOCK Industrial-strength white Tyvek self-seal mailers built to protect high-value shipments. 23
Envelopes & Mailers

18x23 White Self-Seal Tyvek Envelopes 100/Case

PN: TYF1823WS

18 x 23 in 14 lb. Olefin 100 PER CASE
$309.05 / CASE
IN STOCK Premium 15x20 white Tyvek® flat envelopes engineered for industrial shipping and document protection. Self-sealing design with 14 lb. olefin construction delivers 10x the tear resistance of standard paper mailers. Order by the case (100 units) for maximum cost efficiency and reliability.
Envelopes & Mailers

15x20 14 lb White Self-Seal Tyvek Envelopes 100/Case

PN: TYF1520WS

15 x 20 in 14 lb. Olefin 100 PER CASE
$254.64 / CASE
IN STOCK Premium 13 x 10
Envelopes & Mailers

13x10 14 lb Self-Seal Tyvek Envelopes 100/Case

PN: TYF1013WS

13 x 10 in 14 lb. Olefin 100 PER CASE
$74.97 / CASE
IN STOCK Industrial-grade 9x12
Envelopes & Mailers

9x12 14 lb White Self-Seal Tyvek Envelopes 100/Case

PN: TYF0912WS

9 x 12 in 14 lb. Olefin 100 PER CASE
$64.10 / CASE
IN STOCK 10x13x2 Expandable Tyvek Envelopes - Tear Resistant, 100/Case
Envelopes & Mailers

10x13x2 Expandable Tyvek Envelopes 100/Case

PN: TYE10132WS

10 x 13 x 2 in 18 lb. Olefin 100 PER CASE
$141.88 / CASE
IN STOCK Professional-grade white literature mailers designed for e-commerce brands shipping catalogs, brochures, and promotional materials. Features crush-resistant ECT-32-B corrugated construction with secure fold-and-tuck tabs that require no additional supplies. 50-pack bundle arrives ready to assemble.
Boxes - Mailers

13x10x3 White Corrugated Literature Mailers 50-Pack

PN: ML13103

13 x 10 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$104.82 / BUNDLE
IN STOCK Professional 13x10x2 white corrugated literature mailers designed for e-commerce brands. Sturdy ECT-32-B construction with snug-fitting self-seal tabs delivers crush-resistant protection without custom tooling costs. Quick assembly, no additional supplies needed–50-count bundle.
Boxes - Mailers

13x10x2 White Corrugated Literature Mailers 50-Pack

PN: M13102

13 x 10 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$112.79 / BUNDLE

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