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-grade white deluxe literature mailers with self-sealing locking tabs and protective side flaps for maximum document protection. Made from sturdy ECT-32-B corrugated material, these crush-resistant mailers assemble in seconds without tape or tools. Bundle of 50 ready to ship.
Boxes - Mailers

15 1/8 x 11 1/8 x 3 in White Corrugated Literature Mailers Self-Seal 50/Bundle

PN: MFL15113

15 1/8 x 11 1/8 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$108.62 / BUNDLE
IN STOCK Ship documents and products with maximum protection using these crush-resistant deluxe white literature mailers. Features front locking tabs, protective side flaps, and strong ECT-32-B corrugated construction–assembles in seconds without tape, glue, or staples. Sold in bundles of 50.
Boxes - Mailers

15 1/8 x 11 1/8 x 2 in ECT-32-B White Deluxe Literature Mailers 50-Pack

PN: MFL15112

15 1/8 x 11 1/8 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$76.71 / BUNDLE
IN STOCK Professional 14" x 14" x 4" white corrugated literature mailers with self-sealing front locking tabs and protective side flaps for maximum crush resistance. ECT-32-B strength material assembles tape-free in seconds. Bundle of 50 boxes perfect for e-commerce brands shipping catalogs, documents, and flat-pack items.
Boxes - Mailers

14x14x4 White Corrugated Literature Mailers

PN: MFL14144

14 x 14 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$220.27 / BUNDLE
IN STOCK Ship documents with confidence using these 14x14x2 white deluxe literature mailers. Featuring front-locking tabs and protective side flaps, these ECT-32-B corrugated mailers assemble instantly without tape, glue, or staples. Get 50 crush-resistant mailers per bundle.
Boxes - Mailers

14x14x2 White Corrugated Literature Mailers 50-Pack

PN: MFL14142

14 x 14 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$97.98 / BUNDLE
IN STOCK Professional-grade 14x10x6 white corrugated literature mailers deliver crush-resistant protection with zero assembly hassle. Features front locking tabs, side flaps for stacking strength, and self-sealing tuck closure–no tape, glue, or staples required. Sold in bundles of 50.
Boxes - Mailers

14x10x6 White Self-Seal Corrugated Literature Mailers 50/Bundle

PN: MFL14106

14 x 10 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$171.66 / BUNDLE
IN STOCK Protect important documents with crush-resistant 14x10x4 white deluxe literature mailers engineered for e-commerce brands. ECT-32-B corrugated construction with reinforced side flaps and front locking tabs assembles in seconds–no tape, glue, or staples required. Bundle of 50 mailers ready to ship.
Boxes - Mailers

14x10x4 White Deluxe Literature Mailers 50-Pack

PN: MFL14104

14 x 10 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$124.57 / BUNDLE
IN STOCK Professional-grade 14x10x3 deluxe literature mailers featuring protective side flaps and front locking tabs for maximum document security. Manufactured from strong ECT-32-B white corrugated with crush-resistant design. Assembles in seconds without tape, glue, or staples–sold as a convenient bundle of 50.
Boxes - Mailers

14x10x3 White Corrugated Literature Mailers 50/Bundle

PN: MFL14103

14 x 10 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$170.90 / BUNDLE
IN STOCK Professional white deluxe literature mailers (14" x 3.75" x 2.75") with protective side flaps and front locking tabs ensure your documents arrive pristine. Made from durable ECT-32-B corrugated material and assemble in seconds without tape, glue, or staples. Sold as a bundle of 50.
Boxes - Mailers

14x3.75x2.75 White Self-Seal Deluxe Literature Mailers 50/Bundle

PN: MFLRSC

14 x 3.75 x 2 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$49.37 / BUNDLE
IN STOCK Professional 13" x 13" x 3" deluxe literature mailers built from ECT-32-B white corrugated for maximum crush resistance and brand protection. One-piece fold-and-tuck design with front locking tabs and protective side flaps assembles in seconds–no tape, glue, or staples required. Sold as a bundle of 50.
Boxes - Mailers

13x13x3 White Corrugated Literature Mailers 50/Bundle

PN: MFL13133

13 x 13 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$155.71 / BUNDLE
IN STOCK Professional 13x10x4 deluxe literature mailers engineered for e-commerce brands shipping important documents. ECT-32-B corrugated construction with front locking tabs and protective side flaps delivers crush resistance without tape or glue. Assembles in seconds–50 mailers per bundle.
Boxes - Mailers

13x10x4 White Corrugated Literature Mailers 50-Pack

PN: MFL13104

13 x 10 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$157.23 / BUNDLE
IN STOCK Professional white deluxe literature mailers with protective side flaps and front-locking tabs that assemble in seconds without tape or glue. ECT-32-B corrugated construction delivers crush resistance and maximum stacking strength. Sold as a bundle of 50 (12 1/8" x 9 1/4" x 6").
Boxes - Mailers

12 1/8 x 9 1/4 x 6 in White Deluxe Literature Mailers Crush Resistant 50/Bundle

PN: MFL1296

12 1/8 x 9 1/4 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$194.45 / BUNDLE
IN STOCK Professional white deluxe literature mailers with self-sealing front locking tabs and protective side flaps for maximum crush resistance. Features strong ECT-32-B corrugated construction–assembles in seconds without tape, glue, or staples. Sold as a bundle of 50 ready-to-ship mailers.
Boxes - Mailers

12 1/8 x 9 1/4 x 4 in White Deluxe Literature Mailers Self-Seal 50/Bundle

PN: MFL1294

12 1/8 x 9 1/4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$109.38 / BUNDLE
IN STOCK Protect your brand with professional white deluxe literature mailers featuring protective side flaps and self-locking front tabs. Sized 12 1/8" x 9 1/4" x 3", these ECT-32-B corrugated mailers assemble in seconds–no tape, glue, or staples required. Shipped as a 50-pack bundle for cost-effective, high-volume mailing.
Boxes - Mailers

12 1/8 x 9 1/4 x 3 in White Deluxe Literature Mailers Self-Seal 50-Pack

PN: MFL1293

12 1/8 x 9 1/4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$121.53 / BUNDLE
IN STOCK Professional-grade white deluxe literature mailers designed for e-commerce brands shipping documents, catalogs, and marketing materials. Features protective side flaps, front locking tabs, and self-sealing tuck closure–no tape, glue, or staples required. Strong ECT-32-B corrugated construction assembles in seconds.
Boxes - Mailers

12 1/8 x 9 1/4 x 2 in ECT-32-B White Deluxe Literature Mailers 50-Pack

PN: MFL1292

12 1/8 x 9 1/4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$56.78 / BUNDLE
IN STOCK Professional deluxe literature mailers built for damage-free document delivery. These 12x12x6 crush-resistant corrugated boxes feature protective side flaps, locking tabs, and fold-and-tuck assembly–no tape, glue, or staples needed. Get 50 per bundle.
Boxes - Mailers

12x12x6 White Corrugated Literature Mailers 50-Pack

PN: MFL12126

12 x 12 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$211.92 / BUNDLE
IN STOCK Professional 12x12x4 white corrugated literature mailers with integrated locking tabs and protective side flaps designed for maximum document security and crush resistance. Made from durable ECT-32-B corrugated material and assembled in seconds without tape, glue, or staples. Sold as a bundle of 50 mailers.
Boxes - Mailers

12x12x4 White Corrugated Literature Mailers 50-Pack MFL12124

PN: MFL12124

12 x 12 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$164.06 / 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 ->