Large Cardboard Boxes (18"+)

IN STOCK Durable 19x12x7 kraft corrugated boxes with ECT-32 single-wall construction deliver reliable performance for mid-sized shipments and storage. Ship flat to maximize pallet density and cut freight costs by up to 15%. Bundle of 25 boxes–ready to stock your warehouse.
Boxes - Corrugated

19x12x7 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 19127

19 x 12 x 7 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$71.34 / BUNDLE
IN STOCK Optimize your fulfillment operation with these 19x12x3 ECT-32 kraft corrugated boxes–engineered for shallow products like apparel, books, artwork, and framed items. Each bundle of 25 ships flat, maximizing warehouse efficiency and slashing storage overhead. Reliable single-wall construction rated for safe stacking and consistent protection.
Boxes - Corrugated

19x12x3 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 19123

19 x 12 x 3 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$53.98 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes sized 18.5
Boxes - Corrugated

18.5x12.5x12 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 181212R

18 1/2 x 12.5 x 12 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$47.92 / BUNDLE
IN STOCK ECT-32 kraft corrugated shipping boxes deliver dependable mid-weight protection for standard industrial shipments. These 18.5
Boxes - Corrugated

18.5x12.5x10 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 181210R

18 1/2 x 12.5 x 10 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$38.19 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 18.5x12.5x8 dimensions deliver proven stacking strength for mid-weight industrial shipments. Sold in bundles of 25 to maximize freight efficiency and reduce per-unit costs. Fully recyclable kraft construction meets sustainability goals without sacrificing performance.
Boxes - Corrugated

18.5x12.5x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 18128R

18 1/2 x 12.5 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$52.04 / BUNDLE
IN STOCK Heavy-duty ECT-32 kraft corrugated boxes sized 18 1/2
Boxes - Corrugated

18.5x12.5x7 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 18127

18 1/2 x 12.5 x 7 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$41.34 / BUNDLE
IN STOCK Heavy-duty ECT-32 kraft corrugated shipping boxes in standard 18.5x12.5x6
Boxes - Corrugated

18.5x12.5x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 18126R

18 1/2 x 12.5 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$38.97 / BUNDLE
IN STOCK Reliable ECT-32 kraft corrugated boxes in 18x13x12
Boxes - Corrugated

18x13x12 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 181312

18 x 13 x 12 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$61.49 / BUNDLE
IN STOCK Premium ECT-32 kraft corrugated boxes sized 18
Boxes - Corrugated

18x13x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 18135

18 x 13 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$68.96 / BUNDLE
IN STOCK Heavy-duty 21x10x10
Boxes - Corrugated

21x10x10 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 211010

21 x 10 x 10 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$43.21 / BUNDLE
IN STOCK Ship smarter with these 19x12x4 ECT-32 kraft corrugated boxes–engineered for shallow products like apparel, books, and artwork. Bundle of 25 ships flat to maximize your warehouse efficiency and cut freight expenses. Reliable single-wall construction that stacks securely in transit.
Boxes - Corrugated

19x12x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 19124

19 x 12 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$37.48 / BUNDLE
IN STOCK Versatile 18.5
Boxes - Corrugated

18.5x12.5x14 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 181214

18 1/2 x 12.5 x 14 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$46.40 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 20
Boxes - Corrugated

20x12x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 20124

20 x 12 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$38.03 / BUNDLE
IN STOCK Heavy-duty ECT-32 single wall corrugated boxes measuring 17.25
Boxes - Corrugated

17.25x14.25x10 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 171410R

17 1/4 x 14.25 x 10 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$56.67 / BUNDLE
IN STOCK Specialized 28x4x4
Boxes - Corrugated

28x4x4 ECT-32 Kraft Corrugated Boxes 25-Pack

PN: 2844

28 x 4 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$44.64 / BUNDLE
IN STOCK Professional 26x6x20 side loading boxes built from ECT-32 single wall kraft corrugated. Ships and stores flat–maximizing your warehouse efficiency and reducing freight costs. Bundle of 10 units ready for immediate deployment in your fulfillment operation.
Boxes - Corrugated

26x6x20 ECT-32 Kraft Side Loading Boxes 10-Pack

PN: 26620FOL

26 x 6 x 20 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$42.13 / BUNDLE
IN STOCK ECT-32 kraft corrugated long boxes (24
Boxes - Corrugated

24x8x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 2488

24 x 8 x 8 in ECT-32 Corrugated 25 PER BUNDLE
$36.29 / BUNDLE
IN STOCK Purpose-built 24x8x6
Boxes - Corrugated

24x8x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 2486

24 x 8 x 6 in ECT-32 Corrugated 25 PER BUNDLE
$33.63 / BUNDLE
IN STOCK Industrial-grade 22x10x10 corrugated shipping boxes designed for reliable mid-size product protection. ECT-32 kraft construction delivers proven stacking strength and freight efficiency. Buy by the bundle of 20 and reduce per-unit costs.
Boxes - Corrugated

22x10x10 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 221010

22 x 10 x 10 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$35.73 / BUNDLE
IN STOCK ECT-32 single-wall kraft corrugated boxes in 22x10x9
Boxes - Corrugated

22x10x9 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 22109

22 x 10 x 9 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$33.92 / BUNDLE
IN STOCK Ship long, narrow items efficiently with these 22x10x8
Boxes - Corrugated

22x10x8 ECT-32 Kraft Corrugated Boxes 20-Pack

PN: 22108

22 x 10 x 8 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$32.19 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 22
Boxes - Corrugated

22x10x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 22106

22 x 10 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$36.06 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 22
Boxes - Corrugated

22x10x4 ECT-32 Kraft Corrugated Boxes 25-Pack

PN: 22104

22 x 10 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$32.79 / BUNDLE
IN STOCK ECT-32 single-wall kraft corrugated boxes sized 20
Boxes - Corrugated

20x12x16 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 201216

20 x 12 x 16 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$67.41 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes engineered for long, narrow items like wine bottles, umbrellas, and carpet rolls. 20
Boxes - Corrugated

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

PN: 201212

20 x 12 x 12 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$39.84 / BUNDLE
IN STOCK ECT-32 single wall corrugated boxes sized 20
Boxes - Corrugated

20x12x10 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 201210

20 x 12 x 10 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$39.52 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes in 20x12x8 dimensions deliver reliable strength for standard industrial shipping and storage. This 20-box bundle maximizes freight efficiency and reduces per-unit costs for warehouse managers handling moderate-weight products. Fully recyclable and built for sustainable fulfillment operations.
Boxes - Corrugated

20x12x8 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 20128

20 x 12 x 8 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$35.70 / BUNDLE
IN STOCK ECT-32 single-wall kraft corrugated boxes sized 20
Boxes - Corrugated

20x12x7 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 20127

20 x 12 x 7 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$62.89 / BUNDLE
IN STOCK ECT-48 heavy-duty double wall corrugated boxes built for demanding warehouse and fulfillment operations. These 20x12x6
Boxes - Corrugated

20x12x6 ECT-48 Kraft Double Wall Corrugated Boxes 15-Pack

PN: HD20126DW

20 x 12 x 6 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$61.98 / BUNDLE
IN STOCK Ship smarter with these 20x12x3 shallow-depth corrugated boxes made from ECT-32 kraft material. Each bundle of 25 arrives flat to maximize your warehouse storage and cut freight costs. Ideal for apparel, books, frames, and artwork–engineered for efficient packing and stacking.
Boxes - Corrugated

20x12x3 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 20123

20 x 12 x 3 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$54.57 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes sized 19
Boxes - Corrugated

19x13x10 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 191310

19 x 13 x 10 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$82.67 / BUNDLE
IN STOCK ECT-32 kraft corrugated cartons sized 19
Boxes - Corrugated

19x13x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 19136

19 x 13 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$72.47 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes sized 18
Boxes - Corrugated

18x14x14 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 181414

18 x 14 x 14 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$49.21 / BUNDLE
IN STOCK Packrift's 18x14x12
Boxes - Corrugated

18x14x12 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 181412

18 x 14 x 12 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$51.20 / BUNDLE
IN STOCK ECT-32 single-wall corrugated boxes engineered for reliable mid-weight industrial shipping. 18
Boxes - Corrugated

18x14x10 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 181410

18 x 14 x 10 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$54.10 / BUNDLE
IN STOCK Reliable ECT-32 kraft corrugated shipping boxes sized 18
Boxes - Corrugated

18x14x8 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 18148

18 x 14 x 8 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$35.91 / BUNDLE
IN STOCK Optimize your fulfillment with these 18x14x6
Boxes - Corrugated

18x14x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 18146

18 x 14 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$45.03 / BUNDLE
IN STOCK Ship shallow products efficiently with these 18x14x4
Boxes - Corrugated

18x14x4 ECT-32 Kraft Corrugated Boxes 25-Pack

PN: 18144

18 x 14 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$40.71 / BUNDLE
IN STOCK ECT-32 kraft corrugated cartons designed for long, narrow items–wine bottles, umbrellas, carpet rolls, and more. 26
Boxes - Corrugated

26x6x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 2666

26 x 6 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$40.22 / BUNDLE
IN STOCK Purpose-built 24
Boxes - Corrugated

24x8x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 2484

24 x 8 x 4 in ECT-32 Corrugated 25 PER BUNDLE
$46.75 / BUNDLE
IN STOCK ECT-48 heavy-duty double wall corrugated boxes engineered for maximum protection and stacking performance. 20
Boxes - Corrugated

20x12x12 ECT-48 Double Wall Corrugated Boxes 15-Pack

PN: HD201212DW

20 x 12 x 12 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$55.39 / BUNDLE
IN STOCK Premium ECT-32 kraft corrugated boxes in 20
Boxes - Corrugated

20x12x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 20126

20 x 12 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$40.66 / BUNDLE
IN STOCK ECT-32 single-wall kraft corrugated boxes sized 19
Boxes - Corrugated

19x13x13 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 191313

19 x 13 x 13 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$61.44 / BUNDLE
IN STOCK Premium ECT-48 double wall corrugated boxes engineered for maximum protection and stacking performance. These 18x14x14 kraft cartons deliver heavy-duty construction that keeps fragile shipments secure while optimizing warehouse storage. Bundle of 15 ships flat to reduce freight costs and on-site space requirements.
Boxes - Corrugated

18x14x14 ECT-48 Double Wall Corrugated Shipping Boxes 15-Pack

PN: HD181414DW

18 x 14 x 14 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$61.86 / BUNDLE
IN STOCK Industrial-grade ECT-48 double wall corrugated boxes built for maximum protection and stacking performance. These 18x14x12 kraft cartons handle heavier products without crushing, reducing damage claims and freight costs. Sold as a bundle of 15 and ship flat to maximize warehouse efficiency.
Boxes - Corrugated

18x14x12 ECT-48 Double Wall Corrugated Boxes 15-Pack

PN: HD181412DW

18 x 14 x 12 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$60.72 / BUNDLE
IN STOCK Heavy-duty ECT-48 double wall corrugated cartons deliver superior protection and stacking performance for demanding fulfillment operations. These 18x14x10 kraft shipping boxes combine industrial-grade strength with space-saving flat shipment. Bundle of 15 cartons reduces per-unit cost and minimizes warehouse footprint.
Boxes - Corrugated

18x14x10 ECT-48 Double Wall Corrugated Boxes 15-Pack

PN: HD181410DW

18 x 14 x 10 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$69.82 / BUNDLE
IN STOCK Dependable 14x14x18 corrugated boxes manufactured from ECT-32 kraft material–engineered for standard-duty shipping, storage, and fulfillment operations. Single-wall construction balances strength and cost, making this cardboard box ideal for mid-weight products. Bundle of 25 cartons ready to ship.
Boxes - Corrugated

14x14x18 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 141418

14 x 14 x 18 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$61.54 / BUNDLE
IN STOCK Heavy-duty ECT-32 single wall corrugated boxes sized 12
Boxes - Corrugated

12x12x20 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 121220

12 x 12 x 20 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$53.45 / BUNDLE

Product Help Request

Send the SKU, quantity, delivery ZIP, and any required specs so we can route the request.

Overview

Large cardboard boxes — 18" and up on the longest side, through 24x24x24 cubes and long side-loading cartons past 36". Bundle quantities with per-box pricing shown, shipped from 5 US regional warehouses.

How to choose: at these sizes the box wall does real structural work — anything dense belongs in double wall / ECT-44+, and anything palletized should be checked against pallet footprint before ordering. Dimensional weight dominates parcel pricing here, so oversizing costs twice: material and freight. Bulk-scale loads? Consider gaylord boxes instead. Full reference at the size chart.

Frequently asked questions

When should I use double wall for a large box?
Once contents pass roughly 40–65 lb or the box will be stacked on a pallet, step up from ECT-32 to double wall (ECT-44/48). Large single-wall boxes bulge and crush under loads a smaller box of the same grade handles fine.

Do large boxes cost more to ship?
Usually, and mostly through dimensional weight rather than actual weight. Carriers price the space a large box occupies; the tightest size that safely fits your load is the cheapest one to ship.

Updated August 1, 2026. Sizes refresh automatically as catalog stock changes.

Buying path

Buy Large Cardboard Boxes (18"+) 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 needs, send support the details before placing a large order.

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 calculator -> Contact support for larger orders -> Compare corrugated box types -> View products below ->