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 ECT-32 kraft corrugated shipping boxes engineered for shallow-depth products that demand reliable protection without excess material waste. These 18x18x5 cartons ship flat to maximize storage and freight efficiency–25 boxes per bundle. Ideal for apparel, books, picture frames, artwork, and mirrors.
Boxes - Corrugated

18x18x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 18185

18 x 18 x 5 in ECT-32 Corrugated 25 PER BUNDLE
$92.03 / BUNDLE
IN STOCK 18x18x4 Kraft Corrugated Shipping Boxes, 500 Pack Pallet, 32 ECT
Boxes - Corrugated

18x18x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 18184

18 x 18 x 4 in ECT-32 Corrugated 25 PER BUNDLE
$55.39 / BUNDLE
IN STOCK Eliminate carton sizing complexity with these ECT-32 kraft corrugated boxes featuring multi-depth scoring at 6", 4", and 2" heights. Right-size every shipment to cut parcel costs and consolidate inventory into a single SKU. Bundle of 25 boxes includes everything you need for immediate deployment.
Boxes - Corrugated

18x12x6 ECT-32 Multi-Depth Kraft Corrugated Shipping Boxes 25-Pack

PN: MD18126

18 x 12 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$41.78 / BUNDLE
IN STOCK ECT-32 kraft corrugated shipping cartons engineered for standard industrial use. These 17" x 12" x 10" boxes deliver proven stacking strength and freight efficiency in a convenient 25-pack bundle. Recyclable, cost-effective packaging for warehouses and fulfillment operations.
Boxes - Corrugated

17x12x10 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 171210

17 x 12 x 10 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$44.44 / BUNDLE
IN STOCK Ship long and narrow items efficiently with these 28x8x8 ECT-32 kraft corrugated boxes. Wide openings along the length reduce packing time and handling errors. Sold flat in bundles of 25 for maximum freight efficiency and storage savings.
Boxes - Corrugated

28x8x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 2888

28 x 8 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$40.67 / BUNDLE
IN STOCK Optimize your shallow-product shipping with these 26x10x4 ECT-32 kraft corrugated boxes. The 4-inch depth reduces dimensional weight charges and warehouse footprint. Sold in bundles of 25 and ship flat for maximum storage and freight efficiency.
Boxes - Corrugated

26x10x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 26104

26 x 10 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$57.28 / BUNDLE
IN STOCK Heavy-duty ECT-48 double wall corrugated boxes with integrated hand holes for ergonomic handling and efficient warehouse operations. 24" x 12" x 12" kraft construction delivers superior stacking performance and freight protection. Bundle of 15 boxes.
Boxes - Corrugated

24x12x12 ECT-48 Double Wall Hand Hole Boxes 15-Pack

PN: HD241212DWHH

24 x 12 x 12 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$85.89 / BUNDLE
IN STOCK Get superior protection and stacking performance with these ECT-44 heavy-duty corrugated boxes. The 24" x 12" x 12" dimensions deliver 40% greater strength than standard single wall cartons, making them ideal for high-stack warehouses and demanding fulfillment operations. Sold in bundles of 25 kraft boxes, ready to ship flat and assemble.
Boxes - Corrugated

24x12x12 ECT-44 Kraft Heavy-Duty Corrugated Shipping Boxes 25-Pack

PN: HD241212

24 x 12 x 12 in ECT-44 Single Wall Corrugated 25 PER BUNDLE
$87.11 / BUNDLE
IN STOCK Ship long, narrow items with confidence using these 24x12x12 ECT-32 kraft corrugated boxes. Each bundle includes 20 boxes with 2.0 cubic foot capacity and wide openings for fast packing. ECT-32 single wall construction delivers reliable stacking performance and freight efficiency for warehouse operations.
Boxes - Corrugated

24x12x12 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 241212

24 x 12 x 12 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$42.36 / BUNDLE
IN STOCK Heavy-duty ECT-48 double wall corrugated boxes engineered for maximum protection and stacking performance. These 24x12x8 kraft cartons deliver superior compression strength for demanding warehouse and fulfillment operations. Bundle of 15 ships flat–reducing storage footprint and freight costs.
Boxes - Corrugated

24x12x8 ECT-48 Double Wall Corrugated Boxes 15-Pack

PN: HD24128DW

24 x 12 x 8 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$84.77 / BUNDLE
IN STOCK Dependable ECT-32 single-wall kraft corrugated boxes in 24"×12"×8" dimensions–ideal for mid-weight shipping and storage operations. This 25-box bundle cuts per-unit costs while maintaining proven stacking strength. Fully recyclable and designed for efficient warehouse workflows.
Boxes - Corrugated

24x12x8 ECT-32 Kraft Corrugated Boxes

PN: 24128R

24 x 12 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$56.11 / BUNDLE
IN STOCK 22x14x12 Kraft Heavy Duty Double Wall Corrugated Shipping Boxes, 195 Pack Pallet, 48 ECT
Boxes - Corrugated

22x14x12 ECT-48 Kraft Heavy Duty Double Wall Corrugated Shipping Boxes 15-Pack

PN: HD221412DW

22 x 14 x 12 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$86.21 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 22" x 14" x 8" deliver proven durability for high-volume warehouse and fulfillment operations. Each bundle contains 20 boxes–the standard strength solution for consistent stacking performance and freight efficiency. Fully recyclable kraft construction.
Boxes - Corrugated

22x14x8 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 22148

22 x 14 x 8 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$43.85 / BUNDLE
IN STOCK 20x16x16 Double Wall Corrugated Boxes, 210 Pack Pallet, 48 ECT
Boxes - Corrugated

20x16x16 ECT-48 Double Wall Corrugated Boxes 10-Pack

PN: HD201616DW

20 x 16 x 16 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$52.96 / BUNDLE
IN STOCK ECT-48 double wall corrugated shipping boxes designed for warehouse professionals who demand maximum protection and freight efficiency. These 20" x 16" x 12" kraft cartons stack reliably and ship flat to maximize storage. Bundle of 15 boxes ready to deploy.
Boxes - Corrugated

20x16x12 ECT-48 Kraft Double Wall Corrugated Shipping Boxes 15-Pack

PN: HD201612DW

20 x 16 x 12 in D.W./ECT-48 Corrugated 15 PER BUNDLE
$111.75 / BUNDLE
IN STOCK Heavy-duty ECT-48 double wall corrugated boxes built for warehouse managers and fulfillment directors who need reliable, stackable shipping protection. These 20" x 16" x 10" kraft cartons deliver industry-standard strength while shipping and storing flat to maximize logistics efficiency. Bundle of 15 boxes per order.
Boxes - Corrugated

20x16x10 ECT-48 Double Wall Corrugated Shipping Boxes 15-Pack

PN: HD201610DW

20 x 16 x 10 in D.W./ECT-48 Corrugated 15 PER BUNDLE
$113.38 / BUNDLE

Product Help Request

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Buying path

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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 ->