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 Ship documents and literature with professional confidence using these 11.5x11.5x3.75" kraft corrugated mailers. Self-sealing design assembles in seconds without tape, glue, or staples–reducing prep time and labor costs. ECT-32-B strength ensures your shipments arrive crush-proof and protected.
Boxes - Mailers

11.5x11.5x3.75 Kraft Self-Seal Corrugated Literature Mailers 50-Pack

PN: M11113K

11 1/2 x 11 1/2 x 3 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$102.54 / BUNDLE
IN STOCK 11 1/8 x 8 3/4 x 6 Kraft Literature Mailers ECT-32 Corrugated - 50/Bundle
Boxes - Mailers

11.125x8.75x6 Kraft Corrugated Literature Mailers 50-Pack

PN: M1186K

11 1/8 x 8 3/4 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$110.14 / BUNDLE
IN STOCK 11 1/8 x 8 3/4 x 4" Kraft Literature Mailers - Self-Seal, 50 Bundle
Boxes - Mailers

11 1/8 x 8 3/4 x 4 in Kraft Literature Mailers Self-Seal 50/Bundle

PN: M1184K

11 1/8 x 8 3/4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$79.75 / BUNDLE
IN STOCK 11 1/8 x 8 3/4 x 3" Kraft Literature Mailers - Self-Seal, 50/Bundle
Boxes - Mailers

11 1/8 x 8 3/4 x 3 in Kraft Literature Mailers Self-Seal 50/Bundle

PN: M1183K

11 1/8 x 8 3/4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$64.56 / BUNDLE
IN STOCK Ship documents and marketing materials with professional presentation and crush-resistant protection. These self-sealing kraft corrugated literature mailers assemble in seconds without tape, glue, or staples. Perfect for e-commerce brands shipping catalogs, brochures, and documents–50-pack bundle of 11 1/8 x 8 3/4 x 2 5/16" mailers.
Boxes - Mailers

11 1/8 x 8 3/4 x 2 5/16 in Kraft Literature Mailers 50-Pack

PN: M1182DK

11 1/8 x 8 3/4 x 2 5/16 in ECT-32-B Corrugated 50 PER BUNDLE
$55.45 / BUNDLE
IN STOCK 11 1/8 x 8 3/4 x 2" Kraft Literature Mailer - ECT-32-B Corrugated, 50/Bundle
Boxes - Mailers

11 1/8 x 8 3/4 x 2 in ECT-32-B Kraft Corrugated Literature Mailer 50/Bundle

PN: M1182K

11 1/8 x 8 3/4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$54.69 / BUNDLE
IN STOCK Assemble in seconds–no tape, glue, or staples required. These 11x6.5x2.75 ECT-32 kraft corrugated literature mailers deliver professional presentation for catalogs, brochures, and documents. Crush-resistant one-piece design. 50 mailers per bundle.
Boxes - Mailers

11x6.5x2.75 Kraft Self-Seal Corrugated Literature Mailers 50-Pack

PN: M1162K

11 x 6.5 x 2 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$48.61 / BUNDLE
IN STOCK 10x10x4 Kraft Literature Mailers - Self-Seal Corrugated, 50-Pack
Boxes - Mailers

10x10x4 Kraft Self-Seal Corrugated Literature Mailers 50-Pack

PN: M10104K

10 x 10 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$90.39 / BUNDLE
IN STOCK 10x10x3 Kraft Literature Mailer - Self-Seal Corrugated Box, 50 Bundle
Boxes - Mailers

10x10x3 Kraft Self-Seal Corrugated Literature Mailers 50/Bundle

PN: ML10103K

10 x 10 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$130.64 / BUNDLE
IN STOCK 10x6x4 Kraft Literature Mailers - Self-Seal Corrugated, 50-Pack
Boxes - Mailers

10x6x4 Kraft Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML1064K

10 x 6 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$76.71 / BUNDLE
IN STOCK Ship catalogs, brochures, and documents with professional kraft corrugated mailers. These 9x9x3 self-seal literature mailers assemble in seconds without tape–50 per bundle. Strong ECT-32-B construction resists crushing and punctures for reliable product protection.
Boxes - Mailers

9x9x3 Kraft Self-Seal Corrugated Literature Mailers 50/Bundle

PN: M993K

9 x 9 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$60.00 / BUNDLE
IN STOCK Professional 9x9x2 kraft literature mailers built from ECT-32-B corrugated for maximum crush resistance. Self-seal design assembles in seconds without tape, glue, or staples. Perfect for ecommerce brands shipping documents, catalogs, and promotional materials–50 mailers per bundle.
Boxes - Mailers

9x9x2 Kraft Self-Seal Corrugated Literature Mailers 50/Bundle

PN: ML992K

9 x 9 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$45.57 / BUNDLE
IN STOCK Ship documents and literature with confidence using these 9x7.5x3 kraft corrugated mailers. Self-sealing design assembles in seconds without tape, glue, or staples. Each bundle includes 50 crush-resistant mailers manufactured from durable ECT-32-B corrugated material–the professional standard for e-commerce brands.
Boxes - Mailers

9x7.5x3 Kraft Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML973K

9 x 7.5 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$53.17 / BUNDLE
IN STOCK Professional kraft literature mailers designed for e-commerce brands shipping documents, catalogs, and promotional materials. Engineered from ECT-32-B corrugated kraft with a self-seal closure that assembles in seconds–no tape, glue, or staples needed. Bundle of 50 crush-resistant mailers at wholesale pricing.
Boxes - Mailers

9x6.5x4 Kraft Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML964K

9 x 6.5 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$91.91 / CASE
IN STOCK Professional kraft corrugated literature mailers sized 9" x 6.5" x 2.75" with self-sealing technology–no tape, glue, or staples required. Made from strong ECT-32-B material for crush-resistant protection. Sold in bundles of 50 for optimal cost efficiency.
Boxes - Mailers

9x6.5x2.75 Kraft Self-Seal Literature Mailers 50-Pack

PN: M962K

9 x 6.5 x 2 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$44.81 / BUNDLE
IN STOCK Professional 9" x 6.5" x 1.75" kraft corrugated mailers designed for ecommerce brands shipping documents, catalogs, and literature. Each fold-and-tuck mailer assembles in seconds without tape, glue, or staples–reducing prep time and shipping costs. Sold in bundles of 50.
Boxes - Mailers

9x6.5x1.75 Kraft Literature Mailers 50/Bundle

PN: ML961K

9 x 6.5 x 1 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$40.26 / BUNDLE

Product Help Request

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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

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Reorder

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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 ->