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 14x7x7 Kraft Corrugated Shipping Boxes, 1,125 Pack Pallet, 32 ECT
Boxes - Corrugated

14x7x7 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1477

14 x 7 x 7 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$24.83 / BUNDLE
IN STOCK 12x9x10 Kraft Corrugated Shipping Boxes, 950 Pack Pallet, 32 ECT
Boxes - Corrugated

12x9x10 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 12910

12 x 9 x 10 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$29.35 / BUNDLE
IN STOCK 12x9x8 Kraft Corrugated Shipping Boxes, 1,050 Pack Pallet, 32 ECT
Boxes - Corrugated

12x9x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1298

12 x 9 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$26.64 / BUNDLE
IN STOCK Cost-effective ECT-32 kraft corrugated shipping boxes sized 12" x 9" x 7" for mid-range products and ecommerce fulfillment. Single-wall construction balances protection with freight efficiency. Sold as a convenient 25-box bundle.
Boxes - Corrugated

12x9x7 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1297

12 x 9 x 7 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$25.12 / BUNDLE
IN STOCK Score space and shipping costs with our 12x9x6 pre-scored corrugated boxes. Multi-depth design folds to 3 heights–no carton sizer needed. ECT-32 kraft material handles heavy loads. Sold as bundle of 25 boxes.
Boxes - Corrugated

12x9x6 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 25-Pack

PN: MD1296

12 x 9 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$27.51 / BUNDLE
IN STOCK 12x9x6 Kraft Corrugated Shipping Boxes, 1,225 Pack Pallet, 32 ECT
Boxes - Corrugated

12x9x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1296

12 x 9 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$22.78 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 12" 9" 5" deliver reliable single-wall strength for mid-weight shipping and storage. Sold as a bundle of 25 boxes, these standard-duty corrugated cartons are engineered for fulfillment centers, warehouses, and e-commerce operations. Fully recyclable kraft construction maximizes sustainability while meeting cost-per-unit efficiency.
Boxes - Corrugated

12x9x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1295

12 x 9 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$21.20 / BUNDLE
IN STOCK ECT-32 single wall white corrugated boxes in 12x9x4" dimensions, sold in bundles of 25. Perfect for e-commerce fulfillment, retail shipping, and storage applications. Bright white finish provides excellent contrast for applied labels and printed shipping instructions.
Boxes - Corrugated

12x9x4 ECT-32 White Corrugated Shipping Boxes 25-Pack

PN: 1294W

12 x 9 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$25.89 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 12" x 9" x 4" for efficient shallow-product shipping. Bundle of 25 ships flat, reducing storage footprint and freight costs. Perfect for apparel, books, picture frames, and artwork–proven crush strength for reliable protection.
Boxes - Corrugated

12x9x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1294

12 x 9 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$22.09 / BUNDLE
IN STOCK 11 3/8x8 3/16x12 3/8 ECT-44 Hazmat Paint Can Box - 20 Pack
Boxes - Corrugated

11 3/8x8 3/16x12 3/8 ECT-44 Hazmat Shipping Boxes 20-Pack

PN: HAZ1048

11 3/8 x 8 3/16 x 12 3/8 in ECT-44 Single Wall Corrugated 20 PER BUNDLE
$194.45 / BUNDLE
IN STOCK 11.25x8.75x12 Multi-Depth Corrugated Boxes ECT-32 Kraft - 25 Pack
Boxes - Corrugated

11.25x8.75x12 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 25-Pack

PN: MD11812

11 1/4 x 8.75 x 12 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$28.20 / BUNDLE
IN STOCK 11.25x8.75x12 ECT-32 Kraft Corrugated Boxes - Protect Documents & Printed Materials, 25-Box Bundle
Boxes - Corrugated

11.25x8.75x12 ECT-32 Kraft Corrugated Boxes

PN: 11812

11 1/4 x 8.75 x 12 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$28.20 / BUNDLE
IN STOCK Ship long, narrow items efficiently with these 16" x 5" x 5" ECT-32 kraft corrugated boxes. Wide lengthwise opening speeds packing for wine bottles, umbrellas, carpet rolls, and similar products. Sold flat in bundles of 25 for maximum freight efficiency and cost savings.
Boxes - Corrugated

16x5x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1655

16 x 5 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$24.32 / BUNDLE
IN STOCK 14x7x8 ECT-44 Hazmat Corrugated Boxes - 2-Gallon Capacity, Bundle of 20
Boxes - Corrugated

14x7x8 ECT-44 Corrugated Hazmat Shipping Boxes 20-Pack

PN: HAZCO2G

14 x 7 x 8 in ECT-44 Single Wall Corrugated 20 PER BUNDLE
$136.43 / BUNDLE
IN STOCK Ship long, narrow items efficiently with our 13x8x8 ECT-32 kraft corrugated boxes. Wide openings along the length eliminate packing friction–ideal for wine bottles, umbrellas, carpet rolls, and similar products. Sold in bundles of 25, flat-packed for maximum warehouse storage density.
Boxes - Corrugated

13x8x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1388

13 x 8 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$25.83 / BUNDLE
IN STOCK Standard-strength ECT-32 kraft corrugated shipping boxes in 12x9x12 dimensions–ideal for mid-weight products, e-commerce fulfillment, and warehouse storage. This 25-pack bundle delivers cost-effective, recyclable packaging for high-volume operations.
Boxes - Corrugated

12x9x12 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 12912

12 x 9 x 12 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$31.47 / 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 ->