Large Cardboard Boxes (18"+)

IN STOCK Protect high-value shipments with ECT-48 double wall corrugated construction rated for maximum stacking performance. These 20x20x10 kraft boxes deliver industrial-grade durability for warehouse, fulfillment, and logistics operations. Ships flat in bundles of 10 to maximize storage efficiency and reduce freight costs.
Boxes - Corrugated

20x20x10 ECT-48 Double Wall Corrugated Boxes 10-Pack

PN: HD202010DW

20 x 20 x 10 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$72.82 / BUNDLE
IN STOCK 10x10x30
Boxes - Corrugated

10x10x30 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 101030

10 x 10 x 30 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$77.34 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 24
Boxes - Corrugated

24x16x24 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 241624

24 x 16 x 24 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$44.61 / BUNDLE
IN STOCK ECT-48 heavy-duty double wall corrugated boxes in 22x18x16
Boxes - Corrugated

22x18x16 ECT-48 Kraft Double Wall Corrugated Boxes 10-Pack

PN: HD221816DW

22 x 18 x 16 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$82.45 / BUNDLE
IN STOCK Heavy-duty 20x20x20 double wall corrugated boxes built from ECT-48 kraft material deliver superior stacking strength and protection for large shipments, monitor packaging, and demanding freight environments. Ships flat in bundles of 10 to maximize storage efficiency and reduce your packaging footprint. Ideal for warehouse managers seeking reliable, cost-effective bulk shipping cartons.
Boxes - Corrugated

20x20x20 ECT-48 Double Wall Corrugated Boxes 10-Pack

PN: HD202020DW

20 x 20 x 20 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$65.22 / BUNDLE
IN STOCK Heavy-duty ECT-44 corrugated cartons with pre-scored multi-depth design eliminate wasted space and reduce DIM weight penalties on UPS/FedEx shipments. Cut to multiple sizes without additional inventory. 40% stronger than standard shipping boxes–sold as bundle of 10 kraft cartons.
Boxes - Corrugated

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

PN: MDHD202020

20 x 20 x 20 in ECT-44 Single Wall Corrugated 10 PER BUNDLE
$60.90 / BUNDLE
IN STOCK Durable ECT-32 white corrugated cube boxes sized 20x20x20
Boxes - Corrugated

20x20x20 ECT-32 White Corrugated Shipping Boxes 10-Pack

PN: 202020W

20 x 20 x 20 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$64.09 / BUNDLE
IN STOCK ECT-32 single-wall kraft corrugated boxes sized 20
Boxes - Corrugated

20x18x22 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 201822

20 x 18 x 22 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$46.02 / BUNDLE
IN STOCK Industrial-grade 16x16x24
Boxes - Corrugated

16x16x24 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 161624

16 x 16 x 24 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$72.37 / BUNDLE
IN STOCK ECT-32 kraft corrugated cartons engineered for shallow products–apparel, books, frames, and artwork. 26x15x7 dimensions minimize wasted space and freight costs. Ships flat in bundles of 20 for maximum storage efficiency.
Boxes - Corrugated

26x15x7 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 26157

26 x 15 x 7 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$54.62 / BUNDLE
IN STOCK ECT-48 double wall corrugated boxes engineered for warehouse efficiency and maximum protection. Integrated hand holes eliminate manual handling strain while kraft construction delivers industry-leading stacking strength and crush resistance. Bundle of 10 boxes optimizes freight efficiency and reduces per-unit costs.
Boxes - Corrugated

20x20x20 ECT-48 Double Wall Corrugated Shipping Boxes with Hand Holes 10-Pack

PN: HD202020DWHH

20 x 20 x 20 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$103.72 / BUNDLE
IN STOCK ECT-71 heavy-duty double wall corrugated boxes engineered for maximum protection and stacking performance. These 20x20x20
Boxes - Corrugated

20x20x20 ECT-71 Double Wall Boxes 10-Pack

PN: HD202020HDDW

20 x 20 x 20 in ECT-71 Double Wall Corrugated 10 PER BUNDLE
$218.32 / BUNDLE
IN STOCK Adjust from 4
Boxes - Corrugated

37x4x30 ECT-32 Telescoping Inner Boxes 10-Pack

PN: T37430INNER

37 x 4 x 30 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$104.97 / BUNDLE
IN STOCK ECT-32 single-wall kraft inner mirror boxes engineered for safe glass and fragile item shipping. 37
Boxes - Corrugated

37x3.75x30.75 ECT-32 Kraft Inner Mirror Box 10-Pack

PN: INNERMIRROR

37 x 3.75 x 30 3/4 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$75.11 / BUNDLE
IN STOCK ECT-32 kraft corrugated side loading boxes designed for high-speed fulfillment operations. Full overlap (FOL) flaps provide superior product protection while end-loading design maximizes operational efficiency. Ships flat in bundles of 20 to reduce storage footprint and freight costs.
Boxes - Corrugated

36x5x30 ECT-32 Kraft Side Loading Boxes 20-Pack

PN: 36530FOL

36 x 5 x 30 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$95.27 / BUNDLE
IN STOCK End-load your products with confidence using these 36x5x24 corrugated side loading boxes. Engineered with ECT-32 kraft material and full overlap flaps for maximum protection during storage and transit. Ships flat to maximize warehouse efficiency–20 boxes per bundle.
Boxes - Corrugated

36x5x24 ECT-32 Kraft Full Overlap Side Loading Boxes 20-Pack

PN: 36524FOL

36 x 5 x 24 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$98.07 / BUNDLE
IN STOCK Standard-duty corrugated shipping boxes sized 27
Boxes - Corrugated

27x14x9 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 27149

27 x 14 x 9 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$54.79 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 26x15x5
Boxes - Corrugated

26x15x5 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 26155

26 x 15 x 5 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$50.76 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 25
Boxes - Corrugated

25x16x16 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 251616

25 x 16 x 16 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$37.15 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 24
Boxes - Corrugated

24x17x15 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 241715

24 x 17 x 15 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$56.74 / BUNDLE
IN STOCK Packrift's 24x17x12 corrugated boxes deliver ECT-32 single-wall kraft construction built for warehouse-scale shipping operations. Bundle of 15 boxes provides proven stacking performance and cost-efficient freight density for fulfillment centers. Recyclable kraft cardboard reduces environmental impact while maintaining durability.
Boxes - Corrugated

24x17x12 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 241712

24 x 17 x 12 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$48.05 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 24x17x3
Boxes - Corrugated

24x17x3 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 24173

24 x 17 x 3 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$106.11 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 26
Boxes - Corrugated

26x15x12 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 261512

26 x 15 x 12 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$69.24 / BUNDLE
IN STOCK Ship tall items efficiently with ECT-32 kraft corrugated boxes in 5x5x36 dimensions. End-loading design allows fast, secure sealing without additional tools. Bundle of 25 boxes ships flat to maximize freight efficiency and storage space in your warehouse.
Boxes - Corrugated

5x5x36 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 5536

5 x 5 x 36 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$56.37 / BUNDLE
IN STOCK Ship elongated items efficiently with these 33x8.5x5
Boxes - Corrugated

33x8.5x5 ECT-32 Kraft Long Corrugated Shipping Boxes 25-Pack

PN: 3385

33 x 8.5 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$60.33 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 12
Boxes - Corrugated

12x12x30 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 121230

12 x 12 x 30 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$42.55 / BUNDLE
IN STOCK Adjustable two-piece telescoping outer carton designed for tall and irregularly shaped items. ECT-32 kraft corrugated construction with full overlap (FOL) bottom delivers superior stacking strength and freight protection. Sold in bundles of 10–pair with T37430INNER inner box to complete your set.
Boxes - Corrugated

37.5x4.5x30 ECT-32 Kraft Telescoping Outer Box 10-Pack

PN: T37430OUTER

37 1/2 x 4.5 x 30 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$107.86 / BUNDLE
IN STOCK Ship long, narrow items efficiently with these 30x12x12 corrugated cartons featuring wide side openings for fast packing. ECT-32 single-wall kraft construction delivers reliable protection while minimizing freight costs through a tall, compact footprint. Sold flat in bundles of 15–maximize your warehouse storage and cut per-unit costs.
Boxes - Corrugated

30x12x12 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 301212

30 x 12 x 12 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$42.08 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes in 30x12x4 dimensions deliver proven durability for high-volume fulfillment operations. Ships and stores flat–maximize your warehouse footprint while maintaining full stacking performance. Bundle of 25 boxes.
Boxes - Corrugated

30x12x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 30124

30 x 12 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$88.21 / BUNDLE
IN STOCK Durable ECT-32 kraft corrugated boxes designed for reliable mid-weight shipping and storage. Each bundle includes 20 boxes measuring 28
Boxes - Corrugated

28x14x14 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 281414

28 x 14 x 14 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$68.36 / BUNDLE
IN STOCK Industrial-strength 26x16x19 corrugated shipping boxes built from ECT-32 kraft material for reliable stacking and freight efficiency. Sold in bundles of 10 to maximize your packaging volume and reduce per-unit costs. Fully recyclable kraft construction meets sustainability standards for warehouse and fulfillment operations.
Boxes - Corrugated

26x16x19 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 261619

26 x 16 x 19 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$41.09 / BUNDLE
IN STOCK Industrial-grade 26x16x14 corrugated boxes manufactured from ECT-32 kraft material for reliable mid-size shipments. Each bundle includes 15 boxes, optimized for freight efficiency and vertical stacking performance. Recyclable kraft construction reduces waste while maintaining superior crush resistance.
Boxes - Corrugated

26x16x14 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 261614

26 x 16 x 14 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$55.47 / BUNDLE
IN STOCK Industrial-grade 26x16x10 corrugated shipping boxes built with ECT-32 single-wall kraft material for reliable stacking and protection. This bundle of 20 kraft cartons delivers standard strength performance at volume pricing. Ideal for warehouse fulfillment, storage, and mid-weight shipping applications.
Boxes - Corrugated

26x16x10 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 261610

26 x 16 x 10 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$65.05 / BUNDLE
IN STOCK Heavy-duty 24x18x20 corrugated boxes built from ECT-32 kraft material for dependable stacking and freight protection. This bundle of 15 boxes delivers standard strength performance at volume savings. Fully recyclable and ready to ship.
Boxes - Corrugated

24x18x20 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 241820

24 x 18 x 20 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$89.43 / BUNDLE
IN STOCK Professional-grade 24x18x18 deluxe packing boxes engineered for high-volume warehouse and fulfillment operations. ECT-32 single-wall kraft construction delivers dependable stacking strength across multiple pallets. Innovative flap tab design keeps carton flaps secure during handling, reducing packing time and material waste.
Boxes - Corrugated

24x18x18 ECT-32 Kraft Corrugated Moving Boxes 10-Pack

PN: 241818DPB

24 x 18 x 18 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$55.53 / BUNDLE
IN STOCK Upgrade to ECT-44 single wall kraft corrugated boxes engineered for maximum stacking performance and freight efficiency. These 24x18x18 heavy-duty cartons deliver 40% greater strength than standard shipping containers, reducing damage rates and supporting heavier loads. Ships flat in convenient bundles of 10 for easy storage and cost-effective volume purchasing.
Boxes - Corrugated

24x18x18 ECT-44 Kraft Heavy-Duty Corrugated Shipping Boxes 10-Pack

PN: HD241818

24 x 18 x 18 in ECT-44 Single Wall Corrugated 10 PER BUNDLE
$53.89 / BUNDLE
IN STOCK Multi-depth corrugated boxes designed for warehouse managers who need flexible sizing without multiple SKUs. These 24x18x18 kraft cartons feature pre-scored sides that fold to 3 different heights, eliminating the need for a carton sizer. Sold as a bundle of 15 boxes with ECT-32 single wall strength.
Boxes - Corrugated

24x18x18 ECT-32 Kraft Multi-Depth Corrugated Shipping Box 15-Pack

PN: MD241818

24 x 18 x 18 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$66.33 / BUNDLE
IN STOCK Industrial-grade 24x18x18 corrugated boxes engineered for reliable stacking and freight efficiency. ECT-32 single-wall kraft construction delivers 4.5 cubic feet of capacity per carton. Ships flat in bundles of 10 to maximize warehouse storage and reduce inbound shipping costs.
Boxes - Corrugated

24x18x18 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 241818

24 x 18 x 18 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$39.84 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 24x18x16
Boxes - Corrugated

24x18x16 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 241816

24 x 18 x 16 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$59.11 / BUNDLE
IN STOCK Premium ECT-44 single wall kraft corrugated boxes deliver 40% greater stacking strength than standard shipping containers. These 24x18x12
Boxes - Corrugated

24x18x12 ECT-44 Kraft Heavy-Duty Corrugated Shipping Boxes 15-Pack

PN: HD241812

24 x 18 x 12 in ECT-44 Single Wall Corrugated 15 PER BUNDLE
$75.88 / BUNDLE
IN STOCK Adjustable height corrugated boxes that fold to your ideal size–no carton sizer needed. ECT-32 kraft construction handles heavy items while pre-scored sides eliminate inventory bloat and parcel overage charges. Perfect for warehouse managers seeking freight efficiency and cost control.
Boxes - Corrugated

24x18x12 ECT-32 Kraft | Multi-Depth Corrugated Shipping Boxes 10-Pack

PN: MD241812

24 x 18 x 12 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$35.17 / BUNDLE
IN STOCK Heavy-duty 24x18x12 corrugated shipping boxes rated ECT-32 for reliable stacking and freight protection. Each bundle includes 10 kraft cartons with 3.0 cubic foot capacity–ideal for mid-size product shipments. Cost-effective, recyclable packaging for warehouses and fulfillment operations.
Boxes - Corrugated

24x18x12 ECT-32 Kraft Corrugated Heavy Duty Shipping Boxes 10-Pack

PN: 241812

24 x 18 x 12 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$31.70 / BUNDLE
IN STOCK Bundle of 10 durable 24x18x10 kraft corrugated boxes manufactured from ECT-32 single-wall material–the industry standard for mid-weight shipping. Designed for warehouse managers and fulfillment directors seeking reliable, cost-effective cardboard shipping containers that maximize stack performance and minimize freight costs.
Boxes - Corrugated

24x18x10 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 241810

24 x 18 x 10 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$32.72 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes engineered for reliable mid-weight shipping and storage. 24
Boxes - Corrugated

24x18x8 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 24188

24 x 18 x 8 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$60.33 / BUNDLE
IN STOCK Ship shallow products efficiently with these 24x18x6 kraft corrugated boxes featuring ECT-32 single-wall construction. Bundle of 20 flat cartons optimizes warehouse storage and reduces freight costs. Ideal for apparel, books, frames, and artwork.
Boxes - Corrugated

24x18x6 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 24186

24 x 18 x 6 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$56.04 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 24x18x4
Boxes - Corrugated

24x18x4 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 24184

24 x 18 x 4 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$48.41 / BUNDLE
IN STOCK Heavy-duty 22x20x20 corrugated boxes built from ECT-32 kraft material for reliable shipping and storage. Bundle of 15 boxes delivers maximum stacking strength and freight efficiency for warehouse operations. Recyclable kraft cartons meet industrial shipping demands at volume savings.
Boxes - Corrugated

22x20x20 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 222020

22 x 20 x 20 in ECT-32 Corrugated 15 PER BUNDLE
$104.30 / BUNDLE
IN STOCK Move inventory faster with our 22x20x14 ECT-32 kraft corrugated boxes–engineered for standard-weight industrial shipping. Each bundle includes 15 boxes, delivering cost-effective strength and stackability for warehouse operations. Recyclable kraft construction keeps your fulfillment operations sustainable.
Boxes - Corrugated

22x20x14 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 222014

22 x 20 x 14 in ECT-32 Corrugated 15 PER BUNDLE
$58.56 / 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 ->