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 Premium 18x12x3" deluxe literature mailers made from strong ECT-32-B kraft corrugated cardboard. Features protective side flaps and front tuck closure for maximum document protection. Folds and assembles in seconds without tape, glue, or staples–sold in bundles of 25.
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" and assembles instantly without tape, glue, or staples. Bulk pack of 50 mailers for cost-effective shipping solutions.
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" deluxe literature mailer features protective side flaps and front tuck closure for professional presentation. Bulk bundle of 50 boxes–ECT-32-B strength for maximum document security.
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" kraft literature mailers. Engineered from ECT-32-B corrugated cardboard with protective side flaps and tuck closure–no tape, glue, or staples required. Bundle of 50 boxes ready to ship.
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" kraft deluxe literature mailers. Built from sturdy ECT-32-B corrugated with protective side flaps and front tuck closure–no tape, glue, or staples required. Assemble in seconds and ship with confidence. 50-pack bundle.
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" x 12" x 6" kraft corrugated literature mailers designed for e-commerce brands shipping high-value documents, catalogs, and promotional materials. ECT-32-B construction delivers crush resistance with one-piece fold-and-tuck assembly–no tape, glue, or staples required. Sold as a bundle of 25 mailers.
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" deluxe kraft literature mailers–engineered for maximum crush resistance and professional presentation. Assembled in seconds without tape, glue, or staples. Sold in bundles of 50 from durable ECT-32-B corrugated material.
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" x 11 1/8" x 4", these crush-resistant corrugated mailers feature protective side flaps and front outside tuck closure–no tape, glue, or staples required. Bundle of 50 ships ready to use.
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" x 10" x 3") engineered for maximum document protection. Features protective side flaps and front tuck closure–no tape, glue, or staples required. Sold as convenient bundle of 50 boxes for e-commerce brands prioritizing secure, presentable shipping.
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

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 ->