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 12x12x3 white corrugated literature mailers with protective side flaps and locking tabs ensure your documents arrive pristine. Made from strong ECT-32-B corrugated with zero-assembly design–no tape, glue, or staples needed. Sold as a bundle of 50 mailers for maximum value.
Boxes - Mailers

12x12x3 White Corrugated Literature Mailers 50/Bundle MFL12123

PN: MFL12123

12 x 12 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$144.31 / BUNDLE
IN STOCK Professional 12x12x2 deluxe white literature mailers featuring protective side flaps and front locking tabs for maximum document security. Built from ECT-32-B corrugated material with superior crush resistance and stacking strength. Assembles in seconds without tape, glue, or staples–perfect for e-commerce brands shipping catalogs, samples, and important documents. Sold as a bundle of 50 boxes.
Boxes - Mailers

12x12x2 White Corrugated Literature Mailers 50/Bundle

PN: MFL12122

12 x 12 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$124.57 / BUNDLE
IN STOCK Professional 12x11x3 white deluxe literature mailers engineered for e-commerce brands that demand puncture-resistant, crush-resistant packaging. Features protective side flaps, front locking tabs, and one-piece fold-and-tuck assembly–no tape, glue, or staples required. ECT-32B corrugated construction ensures your documents and products arrive pristine. Bundle of 50 boxes.
Boxes - Mailers

12x11x3 White Deluxe Literature Mailers 50/Bundle

PN: MFL12113

12 x 11 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$125.33 / BUNDLE
IN STOCK Professional-grade 12" x 10" x 6" white deluxe literature mailers engineered for e-commerce brands that demand puncture and crush resistance. ECT-32-B corrugated construction with protective side flaps and front locking tabs–no tape, glue, or staples required. Ships as a convenient 50-piece bundle.
Boxes - Mailers

12x10x6 White Corrugated Literature Mailers 50-Pack

PN: MFL12106

12 x 10 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$200.52 / BUNDLE
IN STOCK Professional 12x10x4 white corrugated literature mailers featuring protective side flaps and front locking tabs for maximum document security. Manufactured from strong ECT-32-B material with enhanced stacking strength. Assembles in seconds without tape, glue, or staples–50 per bundle.
Boxes - Mailers

12x10x4 White Corrugated Literature Mailers 50-Pack

PN: MFL12104

12 x 10 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$148.87 / BUNDLE
IN STOCK Professional-grade 12x8x2.75" deluxe white literature mailers built from ECT-32-B corrugated for maximum crush resistance. Featuring protective side flaps and front locking tabs that secure documents without tape or glue. Assembles instantly–ideal for e-commerce brands shipping catalogs, brochures, and important paperwork. Bundle of 50.
Boxes - Mailers

12x8x2.75 White Corrugated Literature Mailers 50/Bundle

PN: MFL1282

12 x 8 x 2 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$80.51 / BUNDLE
IN STOCK Professional-grade white deluxe literature mailers featuring protective side flaps, front locking tabs, and self-seal closure–no tape or glue needed. Built from durable ECT-32-B corrugated material with crush-resistant construction. Perfect for e-commerce brands shipping documents, catalogs, and flat items with confidence. Bundle of 50 boxes.
Boxes - Mailers

11.75x10.75x2.25 White Self-Seal Deluxe Literature Mailers

PN: MFL3RB

11 3/4 x 10.75 x 2 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$113.93 / BUNDLE
IN STOCK 11 1/8x8 3/4x5 White Literature Mailer ECT-32-B Corrugated - 50 Bundle
Boxes - Mailers

11.125x8.75x5 White Corrugated Literature Mailers 50-Pack

PN: MFL1185

11 1/8 x 8 3/4 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$125.19 / BUNDLE
IN STOCK 11 1/8x8 3/4x4 White Corrugated Literature Mailers - Self-Seal, 50/Bundle
Boxes - Mailers

11 1/8 x 8 3/4 x 4 in White Corrugated Literature Mailers Self-Seal 50/Bundle MFL1184

PN: MFL1184

11 1/8 x 8 3/4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$102.54 / BUNDLE
IN STOCK Professional-grade white corrugated literature mailers with front locking tabs and protective side flaps for maximum document protection. Constructed from strong ECT-32-B material and assembles in seconds without tape, glue, or staples. Bundle of 50 deluxe mailers designed for e-commerce brands requiring crush-resistant shipping solutions.
Boxes - Mailers

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

PN: MFL1183

11 1/8 x 8 3/4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$107.10 / BUNDLE
IN STOCK 11 1/8" x 8 3/4" x 2" White ECT-32-B Literature Mailers - 50/Bundle
Boxes - Mailers

11.125x8.75x2 White Corrugated Literature Mailers 50-Pack

PN: MFL1182

11 1/8 x 8 3/4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$57.75 / BUNDLE
IN STOCK 10x10x5 White Corrugated Literature Mailers, 50 Bundle
Boxes - Mailers

10x10x5 White Corrugated Literature Mailers 50/Bundle

PN: MFL10105

10 x 10 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$157.99 / BUNDLE
IN STOCK 10x10x4 White Literature Mailers ECT-32-B Corrugated - 50 Pack
Boxes - Mailers

10x10x4 White Corrugated Literature Mailers 50-Pack MFL10104

PN: MFL10104

10 x 10 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$124.57 / BUNDLE
IN STOCK 10x10x3 White Corrugated Literature Mailer, 50 Bundle
Boxes - Mailers

10x10x3 White Corrugated Literature Mailers 50/Bundle

PN: MFL10103

10 x 10 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$110.89 / BUNDLE
IN STOCK 10x10x2 White Corrugated Literature Mailers, 50 Bundle
Boxes - Mailers

10x10x2 White Corrugated Literature Mailers 50/Bundle

PN: MFL10102

10 x 10 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$61.52 / BUNDLE
IN STOCK 10x4x4 White Literature Mailer ECT-32-B Corrugated - 50 Pack
Boxes - Mailers

10x4x4 White Corrugated Literature Mailers 50-Pack

PN: MFL1044

10 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$92.67 / 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 ->