Boxes & Mailers

SELECTION EXPERT ADVICE

Wall Strength & Load Capacity
MORE INFO
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
MORE INFO
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
MORE INFO
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 Ship documents and marketing materials with confidence using these 13x13x3 deluxe kraft corrugated mailers. Featuring protective side flaps, front tuck closure, and ECT-32-B strength, they assemble in seconds without tape, glue, or staples. Sold as a convenient bundle of 50.
Boxes - Mailers

13x13x3 Kraft Corrugated Literature Mailers 50-Pack MFL13133K

PN: MFL13133K

13 x 13 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$147.35 / BUNDLE
IN STOCK Professional kraft corrugated mailers designed for e-commerce brands shipping documents and catalogs with maximum protection. Deluxe side flaps and front tuck closure provide crush-resistant durability using ECT-32-B corrugated material. Assembles in seconds without tape, glue, or staples–50 mailers per bundle.
Boxes - Mailers

13x10x4 Kraft Corrugated Literature Mailers 50-Pack

PN: MFL13104K

13 x 10 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$150.39 / BUNDLE
IN STOCK Professional kraft corrugated literature mailers engineered for e-commerce brands shipping documents, catalogs, and flat goods. Features protective side flaps, front tuck closure, and ECT-32-B strength–no tape, glue, or staples required. 50-box bundle ready to assemble and ship.
Boxes - Mailers

13x10x2 Kraft Corrugated Literature Mailers 50/Bundle

PN: MFL13102K

13 x 10 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$106.34 / BUNDLE
IN STOCK Ship your most important documents with confidence using these deluxe kraft literature mailers. Built from crush-resistant ECT-32-B corrugated cardboard with protective side flaps and self-sealing tuck closure–no tape, glue, or staples required. Order your 50-pack bundle today for instant professional presentation.
Boxes - Mailers

12 1/8 x 9 1/4 x 4 in Kraft Deluxe Literature Mailer 50-Pack

PN: MFL1294K

12 1/8 x 9 1/4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$140.52 / BUNDLE
IN STOCK Protect your branded documents and marketing materials with these deluxe kraft corrugated literature mailers. Built from strong ECT-32-B corrugated material with protective side flaps and front tuck closure–assembles in seconds without tape or glue. Order your bundle of 50 today for professional presentation that reflects your brand.
Boxes - Mailers

12 1/8 x 9 1/4 x 3 in Kraft Corrugated Literature Mailers Crush Resistant 50/Bundle

PN: MFL1293K

12 1/8 x 9 1/4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$124.44 / BUNDLE
IN STOCK Professional-grade deluxe kraft literature mailers engineered for maximum document protection. Features protective side flaps, self-seal tuck closure, and crush-resistant ECT-32-B corrugated construction. Assembles in seconds without tape, glue, or staples–sold in convenient bundles of 50.
Boxes - Mailers

12 1/8 x 9 1/4 x 2 in Kraft Deluxe Literature Mailer Crush Resistant 50/Bundle

PN: MFL1292K

12 1/8 x 9 1/4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$101.11 / BUNDLE
IN STOCK Protect your documents with our 12x12x6 deluxe kraft corrugated literature mailers featuring protective side flaps and secure front tuck closure. Made from heavy-duty ECT-32-B corrugated material, these crush-resistant mailers assemble in seconds without tape, glue, or staples–sold as a convenient 50-pack bundle.
Boxes - Mailers

12x12x6 Kraft Corrugated Literature Mailers 50-Pack

PN: MFL12126K

12 x 12 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$250.20 / BUNDLE
IN STOCK Protect your most important documents with these 12x12x4 kraft deluxe literature mailers. Featuring protective side flaps, front tuck closure, and crush-resistant ECT-32-B corrugated construction. Assembles in seconds without tape or glue–50-pack bundle ready to ship.
Boxes - Mailers

12x12x4 Kraft Deluxe Literature Mailers 50-Pack

PN: MFL12124K

12 x 12 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$155.71 / BUNDLE
IN STOCK Ship important documents and marketing materials with confidence using these 12x12x2 kraft deluxe literature mailers. Built from strong ECT-32-B corrugated material with protective side flaps and front outside tuck closure for maximum protection without tape or glue. Assembles instantly–ideal for high-volume e-commerce brands requiring professional, crush-resistant mailers.
Boxes - Mailers

12x12x2 Kraft Deluxe Literature Mailers 50-Pack

PN: MFL12122K

12 x 12 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$151.15 / BUNDLE
IN STOCK Protect valuable documents and marketing materials with our 12x11x3 kraft deluxe literature mailers. Built from heavy-duty ECT-32-B corrugated with protective side flaps and front tuck closure–no tape, glue, or staples required. Ships as a convenient bundle of 50.
Boxes - Mailers

12x11x3 Kraft Deluxe Literature Mailers 50/Bundle

PN: MFL12113K

12 x 11 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$120.77 / BUNDLE
IN STOCK Ship premium documents and marketing collateral with maximum protection. These 12x10x6 deluxe kraft literature mailers feature reinforced side flaps and front tuck closure to prevent damage in transit. ECT-32-B corrugated construction delivers crush resistance while one-piece fold-and-tuck design assembles in seconds without tape, glue, or staples. Bundle of 50.
Boxes - Mailers

12x10x6 Kraft Corrugated Literature Mailers 50-Pack

PN: MFL12106K

12 x 10 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$189.89 / BUNDLE
IN STOCK Professional-grade kraft corrugated literature mailers designed for e-commerce brands shipping catalogs, brochures, and important documents. ECT-32-B construction delivers maximum crush resistance with a self-sealing tuck closure that requires no tape, glue, or staples. Bundle of 50 mailers ready to assemble in seconds.
Boxes - Mailers

12 1/8 x 9 1/4 x 6 in Kraft Deluxe Literature Mailer Crush Resistant 50-Pack

PN: MFL1296K

12 1/8 x 9 1/4 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$219.20 / BUNDLE
IN STOCK Professional 12x10x4 kraft deluxe literature mailers designed for e-commerce brands shipping documents, catalogs, and marketing materials. Featuring protective side flaps and front tuck closure for maximum protection without tape or glue. Sold as a bundle of 50 crush-resistant corrugated boxes.
Boxes - Mailers

12x10x4 Kraft Self-Seal Deluxe Literature Mailers 50-Pack

PN: MFL12104K

12 x 10 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$156.48 / BUNDLE
IN STOCK Professional-grade deluxe kraft literature mailers designed for e-commerce brands shipping documents, catalogs, and marketing materials. Features protective side flaps, self-sealing tuck closure, and strong ECT-32-B corrugated construction–no tape or glue required. Bundle of 50 boxes (11.75" x 10.75" x 2.25").
Boxes - Mailers

11.75x10.75x2.25 Kraft Deluxe Literature Mailers 50/Bundle

PN: MFL3RBK

11 3/4 x 10.75 x 2 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$105.54 / BUNDLE
IN STOCK Professional kraft corrugated literature mailers built for maximum document protection. Featuring self-sealing tuck closure and protective side flaps, these 11 1/8x8 3/4x5" ECT-32-B boxes assemble instantly without tape, glue, or staples. Perfect for e-commerce brands shipping catalogs, brochures, and important documents–sold 50 per bundle.
Boxes - Mailers

11 1/8 x 8 3/4 x 5 in Kraft Literature Mailer Crush Resistant 50/Bundle

PN: MFL1185K

11 1/8 x 8 3/4 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$176.40 / BUNDLE
IN STOCK Professional deluxe kraft literature mailers that arrive pristine every time. Featuring protective side flaps and self-seal tuck closure, these 11 1/8" x 8 3/4" x 4" corrugated mailers assemble in seconds and ship 50 per bundle. ECT-32-B kraft construction provides superior crush resistance for your e-commerce documentation.
Boxes - Mailers

11 1/8 x 8 3/4 x 4 in Kraft Deluxe Literature Mailer Crush Resistant 50/Bundle

PN: MFL1184K

11 1/8 x 8 3/4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$117.73 / BUNDLE

Product Help Request

Send the SKU, quantity, delivery ZIP, and any required specs so we can route the request.

Buying path

Buy Boxes & Mailers 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 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 ->