Large Cardboard Boxes (18"+)

IN STOCK Ship long, narrow items efficiently with these 30x10x10
Boxes - Corrugated

30x10x10 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 301010

30 x 10 x 10 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$44.63 / BUNDLE
IN STOCK End-loading corrugated cartons designed for fast product insertion and protection. ECT-32 kraft construction with full overlap (FOL) flaps provides durability for shipping and storage. 2.6 cubic feet capacity per box–sold as a bundle of 10 and ships flat to maximize freight efficiency.
Boxes - Corrugated

30x5x30 ECT-32 Kraft Side Loading Boxes Corrugated 10-Pack

PN: 30530FOL

30 x 5 x 30 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$41.25 / BUNDLE
IN STOCK Ship long, narrow items with ease using these 28x12x12 ECT-32 kraft corrugated boxes featuring wide openings along the length. Engineered for wine bottles, umbrellas, carpet rolls, and similar products. Sold flat in bundles of 20 for maximum freight efficiency and cost savings.
Boxes - Corrugated

28x12x12 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 281212

28 x 12 x 12 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$53.93 / BUNDLE
IN STOCK ECT-32 kraft corrugated cartons sized 28
Boxes - Corrugated

28x12x6 ECT-32 Kraft Corrugated Shipping Boxes Single Wall 25-Pack

PN: 28126

28 x 12 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$51.85 / BUNDLE
IN STOCK ECT-32 kraft corrugated shipping boxes built for industrial strength and efficient stacking. These 26x14x14 cartons handle mid-weight products with proven durability. Sold in convenient bundles of 10 to keep your fulfillment operations moving.
Boxes - Corrugated

26x14x14 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 261414

26 x 14 x 14 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$31.09 / BUNDLE
IN STOCK Ship and store smarter with these 26x14x12 kraft corrugated boxes. ECT-32 single-wall construction provides reliable stacking strength for mid-weight cargo. Bundle of 20 boxes ships flat to maximize warehouse space and reduce freight costs.
Boxes - Corrugated

26x14x12 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 261412

26 x 14 x 12 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$92.69 / BUNDLE
IN STOCK Move more inventory with less space. Our 24x16x18 corrugated shipping boxes deliver ECT-32 single-wall durability in bundles of 15–built for high-volume fulfillment operations. Ships flat to reduce storage footprint while maintaining reliable stacking performance for your supply chain.
Boxes - Corrugated

24x16x18 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 241618

24 x 16 x 18 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$57.54 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes measuring 24
Boxes - Corrugated

24x16x16 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 241616

24 x 16 x 16 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$31.98 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes engineered for high-volume warehouse and fulfillment operations. These 24x16x14
Boxes - Corrugated

24x16x14 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 241614

24 x 16 x 14 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$49.58 / BUNDLE
IN STOCK ECT-32 single-wall corrugated boxes deliver reliable stacking strength and maximum freight efficiency in a 24
Boxes - Corrugated

24x16x13 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 241613

24 x 16 x 13 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$78.85 / BUNDLE
IN STOCK Eliminate carton sizer complexity with these pre-scored 24x16x12 corrugated boxes that fold to multiple heights. ECT-32 kraft construction delivers reliable stacking strength while consolidating your inventory into a single versatile SKU. Save on storage, freight, and parcel service fees by right-sizing every shipment.
Boxes - Corrugated

24x16x12 ECT-32 Multi-Depth Kraft Corrugated Shipping Boxes 15-Pack

PN: MD241612

24 x 16 x 12 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$44.07 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 24
Boxes - Corrugated

24x16x12 ECT-32 Kraft Corrugated Heavy Duty Shipping Boxes 10-Pack

PN: 241612

24 x 16 x 12 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$29.60 / BUNDLE
IN STOCK Industrial-grade 24x16x10 corrugated shipping boxes built from ECT-32 single-wall kraft material for dependable stacking and freight protection. Each bundle contains 15 boxes, delivering consistent performance at volume pricing. Recyclable kraft construction reduces waste while maintaining structural integrity for demanding warehouse operations.
Boxes - Corrugated

24x16x10 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 241610

24 x 16 x 10 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$42.40 / BUNDLE
IN STOCK Standard-strength ECT-32 kraft corrugated boxes in 24x16x8
Boxes - Corrugated

24x16x8 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 24168

24 x 16 x 8 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$53.41 / BUNDLE
IN STOCK Engineered for shallow-product shipping, these 24x16x4 flat corrugated boxes feature ECT-32 kraft construction and ship nested to maximize your storage and freight efficiency. Bundle of 25 gives you the volume savings your warehouse needs while maintaining reliable stacking performance.
Boxes - Corrugated

24x16x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 24164

24 x 16 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$62.95 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes designed for reliable mid-weight shipping and storage. 23x17x12
Boxes - Corrugated

23x17x12 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 231712

23 x 17 x 12 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$34.46 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 22
Boxes - Corrugated

22x18x16 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 221816

22 x 18 x 16 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$56.35 / BUNDLE
IN STOCK Industrial-grade 22x18x12
Boxes - Corrugated

22x18x12 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 221812

22 x 18 x 12 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$49.64 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 22x18x10
Boxes - Corrugated

22x18x10 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 221810

22 x 18 x 10 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$97.45 / BUNDLE
IN STOCK Heavy-duty ECT-32 single-wall corrugated cartons sized 22
Boxes - Corrugated

22x18x8 ECT-32 Kraft Corrugated Cartons 20-Pack

PN: 22188

22 x 18 x 8 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$58.99 / BUNDLE
IN STOCK Optimize your fulfillment with these ECT-32 kraft corrugated boxes in a compact 22
Boxes - Corrugated

22x18x6 ECT-32 Kraft Corrugated Boxes 20-Pack

PN: 22186

22 x 18 x 6 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$55.77 / BUNDLE
IN STOCK Professional-grade 20x20x18 corrugated boxes built from ECT-32 kraft material deliver reliable stacking strength and freight efficiency for high-volume warehouses. Sold in bundles of 10, these heavy-duty shipping cartons maximize pallet density while maintaining superior crush resistance. Cost-effective, recyclable packaging for fulfillment centers handling mid-to-heavy loads.
Boxes - Corrugated

20x20x18 ECT-32 Kraft Corrugated Heavy Duty Shipping Boxes 10-Pack

PN: 202018

20 x 20 x 18 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$40.59 / BUNDLE
IN STOCK Professional-grade 20x20x16 corrugated shipping boxes manufactured from ECT-32 kraft single-wall material. Bundle of 15 boxes delivers proven stacking performance and freight efficiency for warehouse managers and fulfillment centers. Recyclable cardboard construction reduces disposal costs.
Boxes - Corrugated

20x20x16 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 202016

20 x 20 x 16 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$58.42 / BUNDLE
IN STOCK Professional-grade 20x20x15
Boxes - Corrugated

20x20x15 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 202015

20 x 20 x 15 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$76.59 / BUNDLE
IN STOCK Industrial-grade 20x20x14 corrugated shipping boxes engineered for reliable mid-size product protection. ECT-32 kraft construction delivers proven stacking strength and crush resistance. Bundle of 15 flat-packed cartons ships efficiently, reducing freight costs and warehouse storage footprint.
Boxes - Corrugated

20x20x14 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 202014

20 x 20 x 14 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$58.96 / BUNDLE
IN STOCK Maximize your fulfillment efficiency with these ECT-44 heavy-duty corrugated boxes–40% stronger than standard shipping containers for superior protection and stacking performance. Each 20x20x12 kraft carton is engineered for high-volume operations, sold flat in bundles of 10 to reduce freight costs and storage footprint.
Boxes - Corrugated

20x20x12 ECT-44 Kraft Heavy-Duty Corrugated Shipping Boxes 10-Pack

PN: HD202012

20 x 20 x 12 in ECT-44 Single Wall Corrugated 10 PER BUNDLE
$50.43 / BUNDLE
IN STOCK Reduce SKU complexity and cut parcel shipping costs with these pre-scored 20x20x12 corrugated boxes. Fold to 4
Boxes - Corrugated

20x20x12 ECT-32 Kraft Adjustable Multi-Depth Corrugated Shipping Boxes 15-Pack

PN: MD202012

20 x 20 x 12 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$61.55 / BUNDLE
IN STOCK Standard-strength ECT-32 kraft corrugated boxes sized 20
Boxes - Corrugated

20x20x12 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 202012

20 x 20 x 12 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$46.29 / BUNDLE
IN STOCK Industrial-grade 20x20x11 corrugated shipping boxes built from ECT-32 kraft material for reliable stacking and freight efficiency. This bundle includes 15 boxes–the standard choice for warehouse managers and fulfillment operations seeking cost-effective, recyclable packaging solutions without compromising durability.
Boxes - Corrugated

20x20x11 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 202011

20 x 20 x 11 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$55.91 / BUNDLE
IN STOCK Ship shallow products efficiently with these 20x20x8
Boxes - Corrugated

20x20x8 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 20208

20 x 20 x 8 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$46.88 / BUNDLE
IN STOCK Ship shallow products efficiently with these 20x20x7 kraft corrugated boxes rated ECT-32 single wall construction. Ideal for apparel, books, frames, and artwork, this bundle of 15 arrives flat to minimize storage footprint and reduce inbound freight spend.
Boxes - Corrugated

20x20x7 ECT-32 Kraft Corrugated Shipping Boxes Single Wall 15-Pack

PN: 20207

20 x 20 x 7 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$67.36 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 20
Boxes - Corrugated

20x20x6 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 20206

20 x 20 x 6 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$40.40 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 20x20x4
Boxes - Corrugated

20x20x4 ECT-32 Kraft Corrugated Boxes 10-Pack

PN: 20204

20 x 20 x 4 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$26.06 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 20x20x2
Boxes - Corrugated

20x20x2 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 20202

20 x 20 x 2 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$88.01 / BUNDLE
IN STOCK Ship tall items efficiently with our 4x4x36 corrugated boxes–ECT-32 kraft single wall construction delivers proven strength at competitive bulk pricing. End-loading design speeds packing operations. Bundle of 25 ships flat to maximize freight efficiency.
Boxes - Corrugated

4x4x36 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 4436

4 x 4 x 36 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$40.68 / BUNDLE
IN STOCK Ship long and narrow items efficiently with our 32x8x8 ECT-32 kraft corrugated boxes. Wide lengthwise opening speeds packing for wine bottles, umbrellas, carpet rolls, and similar products. Sold and shipped flat in bundles of 25 for maximum freight efficiency and volume savings.
Boxes - Corrugated

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

PN: 3288

32 x 8 x 8 in ECT-32 Corrugated 25 PER BUNDLE
$44.63 / BUNDLE
IN STOCK ECT-32 single wall corrugated boxes sized 28
Boxes - Corrugated

28x12x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 28128

28 x 12 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$89.51 / BUNDLE
IN STOCK Industrial-grade ECT-48 double wall corrugated boxes designed for warehouse and fulfillment operations requiring maximum protection and stacking performance. These 24 x 16 x 16
Boxes - Corrugated

24x16x16 ECT-48 Kraft Double Wall Corrugated Shipping Boxes 10-Pack

PN: HD241616DW

24 x 16 x 16 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$56.06 / BUNDLE
IN STOCK ECT-48 kraft double wall corrugated boxes engineered for maximum protection and stacking performance. These 24
Boxes - Corrugated

24x16x12 ECT-48 Kraft Heavy-Duty Double Wall Corrugated Shipping Boxes 10-Pack

PN: HD241612DW

24 x 16 x 12 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$76.82 / BUNDLE
IN STOCK Industrial-grade ECT-48 double wall corrugated boxes engineered for maximum protection and stacking performance. Each bundle includes 15 flat-shipped kraft cartons, reducing your storage footprint and freight costs while guaranteeing damage-free delivery of mid-weight to heavy merchandise.
Boxes - Corrugated

24x16x8 ECT-48 Double Wall Corrugated Boxes 15-Pack

PN: HD24168DW

24 x 16 x 8 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$102.70 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 24
Boxes - Corrugated

24x16x6 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 24166

24 x 16 x 6 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$48.96 / BUNDLE
IN STOCK Efficient 22x18x4 corrugated shipping boxes in ECT-32 kraft material designed for shallow merchandise and compact freight optimization. Bundle of 25 boxes ships flat to maximize your warehouse storage and reduce dimensional freight charges. Ideal for apparel, books, frames, and artwork shipments.
Boxes - Corrugated

22x18x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 22184

22 x 18 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$96.35 / BUNDLE
IN STOCK Heavy-duty ECT-44 single wall corrugated boxes built 40% stronger than standard shipping containers for superior stacking performance and load-bearing capacity. These 20x20x20
Boxes - Corrugated

20x20x20 ECT-44 Kraft Heavy-Duty Corrugated Shipping Boxes 10-Pack

PN: HD202020

20 x 20 x 20 in ECT-44 Single Wall Corrugated 10 PER BUNDLE
$60.58 / BUNDLE
IN STOCK Reduce carton inventory and cut shipping costs with these 20x20x20 multi-depth corrugated boxes. Pre-scored kraft cardboard adjusts to multiple heights–no carton sizer needed. ECT-32 single wall construction delivers strength and reliability. Sold as a bundle of 10.
Boxes - Corrugated

20x20x20 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 10-Pack

PN: MD202020

20 x 20 x 20 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$47.66 / BUNDLE
IN STOCK ECT-32 kraft corrugated cube boxes in 20x20x20 dimensions–the industry-standard size for shipping round and cylindrical products with maximum stacking strength. Sold flat in convenient bundles of 10 for efficient warehouse storage and fast fulfillment operations.
Boxes - Corrugated

20x20x20 ECT-32 Kraft Corrugated Cube Shipping Box 10-Pack

PN: 202020

20 x 20 x 20 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$38.72 / BUNDLE
IN STOCK Heavy-duty ECT-48 double wall corrugated boxes engineered for maximum protection and stacking performance. Each bundle includes 10 kraft cartons (20
Boxes - Corrugated

20x20x16 ECT-48 Double Wall Corrugated Shipping Boxes 10-Pack

PN: HD202016DW

20 x 20 x 16 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$67.47 / BUNDLE
IN STOCK Industrial-grade ECT-48 double wall corrugated boxes with built-in hand holes for efficient warehouse handling. 20
Boxes - Corrugated

20x20x12 ECT-48 Double Wall Hand Hole Box 10-Pack

PN: HD202012DWHH

20 x 20 x 12 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$77.35 / BUNDLE
IN STOCK Heavy-duty ECT-48 double wall corrugated cartons engineered for maximum protection and stacking performance. Each 20
Boxes - Corrugated

20x20x12 ECT-48 Kraft Double Wall Corrugated Shipping Boxes 10-Pack

PN: HD202012DW

20 x 20 x 12 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$56.89 / 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 ->