Boxes & Mailers

SELECTION EXPERT ADVICE

Wall Strength & Load Capacity
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Match single-, double-, or triple-wall corrugated construction to your product weight to prevent in-transit damage and minimize costly returns.
Dimensional Weight Cost Control
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Right-sized boxes cut carrier DIM weight charges, selecting the optimal LxWxH for each SKU directly lowers your per-shipment freight cost.
Mailer Box vs. RSC: Choose Correctly
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Self-locking mailer boxes suit branded DTC shipments; traditional RSC corrugated boxes are ideal for palletized B2B and high-volume fulfillment.

Need help choosing boxes?

Pick the right corrugated box without overpaying for size or strength

Use these buying guides to size your box, compare board strength, and avoid dimensional weight surcharges.

Corrugated Boxes Guide → How to choose size, strength, and wall type Box Size Calculator → Find the smallest safe box for your product 32 ECT vs 200 lb Test → Which board strength rating fits your shipment
Overview

3,094 corrugated boxes, literature mailers and mailing tubes from 2 to 36 inches, mostly ECT-32 kraft and white, sold in bundles of 10 to 50. Each listing shows inside dimensions, board grade and bundle count so you can match a carton to the part you ship. 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

IN STOCK Professional deluxe white literature mailers (22"x18"x2.75") built from sturdy ECT-32-B corrugated with front locking tabs and protective side flaps that lock securely without tape, glue, or staples. Stacks stronger and assembles in seconds–ideal for e-commerce brands shipping catalogs, documents, and promotional materials. Sold as bundle of 25.
Boxes - Mailers

22x18x2.75 White Corrugated Literature Mailers 25-Pack

PN: MFL22182

22 x 18 x 2 3/4 in ECT-32-B Corrugated 25 PER BUNDLE
$97.98 / BUNDLE
IN STOCK Professional 20x20x4" deluxe white literature mailers built from sturdy ECT-32-B corrugated material with protective side flaps and self-locking front closure. No tape, glue, or staples needed–assembles in seconds. Sold as 25-pack bundle for e-commerce brands demanding crush-resistant, puncture-proof document protection.
Boxes - Mailers

20x20x4 White Corrugated Literature Mailers 25-Pack

PN: MFL20204

20 x 20 x 4 in ECT-32-B Corrugated 25 PER BUNDLE
$147.73 / BUNDLE
IN STOCK Professional-grade white corrugated mailers designed for keyboards, documents, and delicate electronics. These die-cut literature boxes feature self-sealing construction that requires no tape or glue–assemble in seconds. ECT-32-B corrugated material provides puncture-resistant protection. Bundle of 50 ships flat for efficient storage.
Boxes - Mailers

19 1/8 x 9 1/8 x 2 3/16 in White Corrugated Literature Mailers 50/Bundle

PN: MFL1992

19 1/8 x 9 1/8 x 2 3/16 in ECT-32-B Corrugated 50 PER BUNDLE
$80.51 / BUNDLE
IN STOCK Professional 19x12x3 deluxe white corrugated mailers designed for e-commerce brands shipping documents, catalogs, and marketing materials. ECT-32-B corrugated construction with protective side flaps and front locking tabs provides maximum crush resistance. Tool-free assembly–no tape, glue, or staples required. Sold as bundle of 25.
Boxes - Mailers

19x12x3 White Corrugated Literature Mailers 25/Bundle

PN: MFL19123

19 x 12 x 3 in ECT-32-B Corrugated 25 PER BUNDLE
$87.35 / BUNDLE
IN STOCK Professional 18x12x6" deluxe literature mailers built from ECT-32-B corrugated for maximum crush resistance and document protection. Self-sealing tuck closure with front locking tabs assembles in seconds without tape, glue, or staples. Sold in bundles of 25 for e-commerce brands shipping catalogs, samples, and marketing materials.
Boxes - Mailers

18x12x6 White Corrugated Literature Mailers 25-Pack

PN: MFL18126

18 x 12 x 6 in ECT-32-B Corrugated 25 PER BUNDLE
$140.14 / BUNDLE
IN STOCK Professional 18x12x4 deluxe literature mailers engineered for e-commerce brands who demand crush-resistant protection. Built from ECT-32-B corrugated with front locking tabs and reinforced side flaps–assembles in seconds without tape, glue, or staples. Bundle of 25 per case.
Boxes - Mailers

18x12x4 White Corrugated Literature Mailers 25/Bundle

PN: MFL18124

18 x 12 x 4 in ECT-32-B Corrugated 25 PER BUNDLE
$72.54 / BUNDLE
IN STOCK Professional-grade 18x12x3 white corrugated literature mailers engineered for e-commerce brands that demand crush-resistant protection without assembly hassle. Front locking tabs and protective side flaps secure documents instantly–no tape, glue, or staples required. Sold as a convenient bundle of 25.
Boxes - Mailers

18x12x3 White Corrugated Literature Mailers 25/Bundle

PN: MFL18123

18 x 12 x 3 in ECT-32-B Corrugated 25 PER BUNDLE
$58.87 / BUNDLE
IN STOCK Professional 18x12x2 white corrugated literature mailers designed for e-commerce brands who demand crush-resistant protection. Features front locking tabs, protective side flaps, and ECT-32-B strength–assembles in seconds without tape or tools. 50-pack bundle.
Boxes - Mailers

18x12x2 White Corrugated Literature Mailers 50-Pack

PN: MFL18122

18 x 12 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$140.52 / BUNDLE
IN STOCK Ship important documents with professional confidence. These 17 1/8x11 1/8x4" white corrugated literature mailers feature protective side flaps, front locking tabs, and crush-resistant ECT-32-B construction. Fold-and-tuck design assembles in seconds without tape, glue, or staples–sold 50 per bundle.
Boxes - Mailers

17 1/8 x 11 1/8 x 4 in White Corrugated Literature Mailers Crush Resistant 50-Pack

PN: MFL17114

17 1/8 x 11 1/8 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$135.20 / BUNDLE
IN STOCK Professional-grade white corrugated literature mailers designed for e-commerce brands requiring maximum document protection and polished presentation. Features self-sealing front locking tabs, protective side flaps for enhanced stacking strength, and ECT-32-B corrugated construction. Assembles instantly without tape, glue, or staples–sold as a convenient 50-pack bundle.
Boxes - Mailers

17 1/8 x 11 1/8 x 3 in White Corrugated Literature Mailers Crush Resistant 50-Pack

PN: MFL17113

17 1/8 x 11 1/8 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$115.45 / BUNDLE
IN STOCK Protect high-value documents with these crush-resistant, white deluxe literature mailers (17 1/8" x 11 1/8" x 2"). ECT-32-B corrugated construction with self-sealing front locking tabs and protective side flaps assembles in seconds without tape, glue, or staples. Sold in bundles of 50.
Boxes - Mailers

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

PN: MFL17112

17 1/8 x 11 1/8 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$106.56 / BUNDLE
IN STOCK Professional 16" x 16" x 2.75" white corrugated literature mailers engineered for e-commerce brands. Self-sealing tuck closure with front locking tabs eliminates tape–assemble in seconds. ECT-32-B construction delivers crush-resistant protection for catalogs, documents, and branded materials. 50-box bundle.
Boxes - Mailers

16x16x2.75 White Self-Seal Corrugated Literature Mailers 50/Bundle

PN: MFL16162

16 x 16 x 2 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$127.60 / BUNDLE
IN STOCK Ship documents and marketing materials with confidence using our 16x12x6 white deluxe literature mailers. Built from ECT-32-B corrugated with reinforced side flaps and front-locking tabs to ensure maximum crush resistance and professional presentation. Assembles in seconds without tape, glue, or staples–sold as a bundle of 25.
Boxes - Mailers

16x12x6 White Deluxe Literature Mailers 25/Bundle

PN: MFL16126

16 x 12 x 6 in ECT-32-B Corrugated 25 PER BUNDLE
$152.29 / BUNDLE
IN STOCK Professional 16x12x4 deluxe white corrugated literature mailers featuring self-sealing front locking tabs and protective side flaps for maximum document protection. ECT-32-B construction delivers crush resistance and superior stacking strength. Assembles instantly without tape, glue, or staples–sold as a bundle of 50.
Boxes - Mailers

16x12x4 White Self-Seal Corrugated Literature Mailers 50/Bundle

PN: MFL16124

16 x 12 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$185.33 / BUNDLE
IN STOCK Ship documents with confidence using these 16x10x2.75" deluxe white literature mailers featuring front locking tabs and protective side flaps for maximum crush resistance. Made from durable ECT-32-B corrugated, these fold-and-tuck mailers assemble in seconds without tape, glue, or staples–ideal for e-commerce brands sending catalogs, brochures, and important paperwork. Bundle of 50.
Boxes - Mailers

16x10x2.75 ECT-32-B White Deluxe Literature Mailers

PN: MFL16102

16 x 10 x 2 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$94.94 / BUNDLE
IN STOCK Professional-grade deluxe white literature mailers designed for e-commerce brands shipping documents, catalogs, and promotional materials. Features protective side flaps, front locking tabs, and ECT-32-B corrugated construction for maximum crush resistance. Assembles in seconds without tape, glue, or staples–50 mailers per bundle.
Boxes - Mailers

15 1/8 x 11 1/8 x 4 in White Corrugated Literature Mailers Crush Resistant 50-Pack

PN: MFL15114

15 1/8 x 11 1/8 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$127.60 / BUNDLE

Product Help Request

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Buying path

Buy Boxes & Mailers by the specs that change the order

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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 ->