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 kraft literature mailers designed for e-commerce brands shipping documents, catalogs, and marketing materials. These 9x6.25x4" self-seal corrugated mailers assemble in seconds without tape, tape, or glue–and provide crush-resistant protection in every shipment. Bundle of 50.
Boxes - Mailers

9x6.25x4 Kraft Self-Seal Corrugated Literature Mailers 50-Pack

PN: M964K

9 x 6.25 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$78.23 / BUNDLE
IN STOCK Professional-grade kraft literature mailers sized 7.5" x 7" x 3.25" with self-seal closure–no tape, glue, or staples required. Manufactured from sturdy ECT-32B corrugated material for crush-resistant protection of documents and promotional materials. Ships in convenient 50-pack bundles.
Boxes - Mailers

7.5x7x3.25 Kraft Self-Seal Literature Mailers 50-Pack

PN: MIBM1MK

7 1/2 x 7 x 3 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$55.45 / BUNDLE
IN STOCK Ship professional documents and literature with confidence using these crush-resistant kraft literature mailers. Pre-designed 7 3/8" x 7 3/8" x 1 3/8" corrugated mailers assemble in seconds without tape, glue, or staples. Bundle of 50 boxes made from durable ECT-32-B kraft corrugated–the cost-effective alternative to custom cartons.
Boxes - Mailers

7 3/8 x 7 3/8 x 1 3/8 in Kraft Literature Mailers 50-Pack

PN: MMC1K

7 3/8 x 7 3/8 x 1 3/8 in ECT-32-B Corrugated 50 PER BUNDLE
$48.43 / BUNDLE
IN STOCK Professional-grade 7x7x2 kraft literature mailers designed for e-commerce brands shipping catalogs, brochures, and documents. Manufactured from durable ECT-32-B corrugated cardboard with self-seal closure–no tape, glue, or staples required. Bundle of 50 crush-resistant mailers ready to assemble in seconds.
Boxes - Mailers

7x7x2 Kraft Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML772K

7 x 7 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$37.22 / BUNDLE
IN STOCK Professional-grade 7x3 5/8x2 1/8 kraft corrugated literature mailers designed for e-commerce brands shipping documents, catalogs, and marketing materials. ECT-32-B corrugated construction delivers crush resistance without custom tooling costs. Self-seal fold-and-tuck assembly requires no tape, glue, or staples–50 boxes per bundle ready to use immediately.
Boxes - Mailers

7 x 3 5/8 x 2 1/8 in ECT-32-B Kraft Corrugated Literature Mailers 50-Pack

PN: ML732K

7 x 3 5/8 x 2 1/8 in ECT-32-B Corrugated 50 PER BUNDLE
$28.86 / BUNDLE
IN STOCK Professional-grade 6x6x2 literature mailers manufactured from ECT-32-B kraft corrugated for maximum protection without custom costs. Self-sealing fold-and-tuck design assembles instantly–no tape, glue, or staples required. Ideal for e-commerce brands shipping catalogs, brochures, and documents in bulk.
Boxes - Mailers

6x6x2 Kraft Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML662K

6 x 6 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$35.70 / BUNDLE
IN STOCK Industrial-grade ECT-32 kraft corrugated trays sized 24" x 15" x 1 3/4" for efficient small parts storage and light-duty shipping. Ships flat to maximize freight efficiency and warehouse rack space. Bundle of 50 trays.
Boxes - Corrugated

24x15x1.75 ECT-32 Kraft Corrugated Trays 50-Pack

PN: 24152CT

24 x 15 x 1 3/4 in ECT-32 Corrugated 50 PER BUNDLE
$99.85 / BUNDLE
IN STOCK Heavy-duty ECT-32 kraft corrugated trays sized 24" x 12" x 1 3/4" deliver reliable storage and transport for small parts and lightweight loads. Each bundle contains 50 trays that ship flat, reducing freight costs and storage footprint. Foldable sides ensure maximum stability and security during warehouse operations.
Boxes - Corrugated

24x12x1.75 ECT-32 Kraft Corrugated Trays 50-Pack

PN: 24122CT

24 x 12 x 1 3/4 in ECT-32 Corrugated 50 PER BUNDLE
$67.60 / BUNDLE
IN STOCK Durable ECT-32 kraft corrugated trays measuring 15" x 12" x 1¾" designed for lightweight parts storage, order picking, and shelf organization. Ships flat in convenient 50-unit bundles, reducing storage footprint and freight costs. Easy-fold sides maximize stability during handling and transport.
Boxes - Corrugated

15x12x1.75 ECT-32 Kraft Corrugated Trays 50-Pack

PN: 15122CT

15 x 12 x 1 3/4 in ECT-32 Corrugated 50 PER BUNDLE
$47.69 / BUNDLE
IN STOCK Crush-resistant kraft corrugated mailers sized 24" x 4" x 4" with ECT-32-B strength rating for reliable small item shipment. One-piece fold-and-tuck design requires no tape, glue, or staples–assembly takes seconds. Ships and stores flat in bundles of 50 to maximize your warehouse efficiency.
Boxes - Mailers

24x4x4 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M2444K

24 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$76.75 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32 kraft corrugated mailers. One-piece fold-and-tuck design requires no tape, glue, or staples–assembly takes seconds. Double-wall crush-resistant construction protects fragile goods while shipping flat saves warehouse space and freight costs.
Boxes - Mailers

17.5x3.5x3.5 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: MLR84K

17 1/2 x 3.5 x 3 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$51.42 / BUNDLE
IN STOCK Heavy-duty ECT-32 kraft corrugated mailers engineered for maximum crush resistance and doubled protection. One-piece fold-and-tuck design requires no tape, glue, or staples–assembly takes seconds. Ships and stores flat in 50-unit bundles to optimize warehouse space and reduce freight costs.
Boxes - Mailers

16x4x4 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M1644K

16 x 4 x 4 in ECT-32 Single Wall Corrugated 50 PER BUNDLE
$89.63 / BUNDLE
IN STOCK Ship small items with confidence using our ECT-32-B kraft corrugated mailers. One-piece fold-and-tuck design eliminates tape and assembly time while double walls provide crush resistance. Bundle of 50 ships flat to maximize warehouse efficiency.
Boxes - Mailers

14x4x4 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M1444K

14 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$69.88 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B kraft corrugated mailers featuring crush-resistant double-wall construction on front and sides. One-piece fold-and-tuck design requires no tape, glue, or staples–assembly takes seconds. At 13.5x3.5x3.5", perfect for tools, glassware, and fragile products. Ships and stores flat to maximize warehouse efficiency. 50 mailers per bundle.
Boxes - Mailers

13.5x3.5x3.5 ECT-32-B Kraft Corrugated Mailers 50/Bundle

PN: MLRBLK

13 1/2 x 3.5 x 3 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$42.47 / BUNDLE
IN STOCK Lightweight 12x9x4" kraft corrugated mailers with ECT-32-B crush-resistant construction ship flat and fold in seconds–no tape, glue, or staples required. Double-wall protection on front and sides. Bundle of 50 boxes saves space and reduces freight costs.
Boxes - Mailers

12x9x4 ECT-32-B Kraft Corrugated Mailers 50/Bundle

PN: MLR1294K

12 x 9 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$107.86 / BUNDLE
IN STOCK Save warehouse space and shipping costs with these ECT-32-B crush-resistant kraft corrugated mailers in 12x9x2 dimensions. One-piece folding design requires no tape, glue, or staples–ready to pack in seconds. Bundle of 50 ships and stores flat for maximum efficiency.
Boxes - Mailers

12x9x2 ECT-32 Kraft Corrugated Mailers 50/Bundle

PN: MLR1292K

12 x 9 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$107.86 / 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 ->