Large Cardboard Boxes (18"+)

IN STOCK ECT-44 single wall kraft corrugated boxes sized 36
Boxes - Corrugated

36x6x42 ECT-44 Kraft Side Loading Boxes - Bundle of 5

PN: HD36642FOL

36 x 6 x 42 in ECT-44 Single Wall Corrugated 5 PER BUNDLE
$55.55 / BUNDLE
IN STOCK Maximize shipment protection with ECT-48 heavy-duty double wall corrugated boxes sized 30x24x12–engineered for superior stacking strength and compression resistance. Kraft kraft construction absorbs impact while flat-shipped bundles of 10 minimize your storage footprint and freight costs. Built for warehouse managers who demand reliable performance at scale.
Boxes - Corrugated

30x24x12 ECT-48 Double Wall Corrugated Boxes - Heavy-Duty Shipping, Bundle of 10

PN: HD302412DW

30 x 24 x 12 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$95.22 / BUNDLE
IN STOCK Heavy-duty 24x24x30 corrugated shipping boxes with ECT-32 kraft construction for reliable protection and maximum stack strength. This 10-pack bundle delivers warehouse-ready performance at volume pricing. Fully recyclable kraft material meets sustainability standards.
Boxes - Corrugated

24x24x30 Shipping Boxes — ECT-32 Kraft Corrugated, 10-Pack

PN: 242430

24 x 24 x 30 in ECT-32 Corrugated 10 PER BUNDLE
$77.07 / BUNDLE
IN STOCK Ship tall items efficiently with our 18x18x36 ECT-32 kraft corrugated boxes. End-loading design speeds up packing and sealing. Sold as bundles of 10 flat for maximum freight efficiency and storage savings.
Boxes - Corrugated

18x18x36 Shipping Boxes - ECT-32 Kraft Corrugated, 10-Pack

PN: 181836

18 x 18 x 36 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$59.68 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes designed for vertical storage and side loading operations. 8x4x46
Boxes - Corrugated

8x4x46" Full Overlap Side Loading Box ECT-32 Kraft - Bundle of 15

PN: 8446FOL

8 x 4 x 46 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$67.31 / BUNDLE
IN STOCK Adjustable two-piece telescoping inner boxes designed for tall and irregularly shaped items. 6
Boxes - Corrugated

6x6x48 Double Wall Telescoping Inner Boxes ECT-48 Kraft - 15 Pack

PN: T6648INNERDW

6 x 6 x 48 in D.W./ECT-48 Corrugated 15 PER BUNDLE
$116.44 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 6x6x48 dimensions ship in bundles of 25 flat for maximum freight efficiency. End-loading design accommodates tall items like shelving, rods, and trophies with superior stacking strength. Replace expensive mailing tubes at a fraction of the cost.
Boxes - Corrugated

6x6x48 Shipping Boxes — ECT-32 Kraft Corrugated, 25-Pack

PN: 6648

6 x 6 x 48 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$72.31 / BUNDLE
IN STOCK ECT-51 double wall corrugated cartons engineered for flat panel TV shipment. 46x8x30
Boxes - Corrugated

46x8x30 ECT-51 Double Wall TV Box - Full Overlap Kraft Carton, Bundle of 5

PN: 46830FPFOL

46 x 8 x 30 in ECT-51 Double Wall Corrugated 5 PER BUNDLE
$130.63 / BUNDLE
IN STOCK ECT-32 single-wall corrugated boxes sized 30
Boxes - Corrugated

30x24x12 Shipping Boxes — ECT-32 Kraft Corrugated, 15-Pack

PN: 302412

30 x 24 x 12 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$89.26 / BUNDLE
IN STOCK Heavy-duty 24 x 18 x 36 corrugated shipping boxes with ECT-32 single wall construction deliver reliable stacking performance and freight efficiency. Kraft corrugated cartons ship and store flat to maximize warehouse space and reduce logistics costs. Bundle of 10 boxes–the industry standard for mid-sized fulfillment operations.
Boxes - Corrugated

24x18x36 Shipping Boxes — ECT-32 Kraft Corrugated, 10-Pack

PN: 241836

24 x 18 x 36 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$116.85 / BUNDLE
IN STOCK Engineered for tall and irregularly shaped shipments, these 14.5x14.5x40
Boxes - Corrugated

14.5x14.5x40" Telescoping Outer Boxes ECT-32 Kraft - 15 Pack

PN: T141440OUTER

14 1/2 x 14 1/2 x 40 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$93.88 / BUNDLE
IN STOCK Ship tall items efficiently with our 14x14x40 corrugated boxes–ECT-32 kraft single-wall construction rated for stacking and freight durability. End-loading design streamlines your packing workflow. Bundle of 15 ships flat to maximize warehouse storage and reduce freight spend.
Boxes - Corrugated

14x14x40 Shipping Boxes - ECT-32 Kraft Corrugated, 15-Pack

PN: 141440

14 x 14 x 40 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$86.24 / BUNDLE
IN STOCK Adjustable two-piece telescoping outer boxes designed for tall and irregularly shaped items. ECT-32 single-wall kraft corrugated with full overlap bottom for maximum stacking strength. Sold as bundle of 25–pair with T6648INNER for a complete set.
Boxes - Corrugated

6.5x6.5x48 Kraft Telescoping Outer Boxes ECT-32 - Adjustable Tall Item Shipping, Bundle of 25

PN: T6648OUTER

6 1/2 x 6 1/2 x 48 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$80.89 / BUNDLE
IN STOCK Heavy-duty ECT-32 kraft corrugated boxes in 4
Boxes - Corrugated

4x4x50 Shipping Boxes — ECT-32 Kraft Corrugated, 25-Pack

PN: 4450

4 x 4 x 50 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$84.98 / BUNDLE
IN STOCK Ship or store garments without removing from hangers using these heavy-duty ECT-48 double-wall wardrobe boxes. 24
Boxes - Corrugated

24x20x34 ECT-48 Corrugated Shipping Boxes, 5-Pack

PN: 242034WARD

24 x 20 x 34 in ECT-48 Double Wall Corrugated 5 PER BUNDLE
$94.41 / BUNDLE
IN STOCK Adjust height to fit tall and irregular items with this two-piece telescoping outer box. ECT-32 kraft construction with full overlap bottom delivers reliable stacking strength and freight stability. Sold as bundle of 15–pair with T12448INNER to complete your shipping solution.
Boxes - Corrugated

12.5x4.5x48" Telescoping Outer Boxes ECT-32 Kraft - Adjustable, Bundle of 15

PN: T12448OUTER

12 1/2 x 4.5 x 48 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$105.05 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 34x21x6
Boxes - Corrugated

34x21x6" ECT-32 Kraft Corrugated Boxes - Shallow Depth Design, Bundle of 10

PN: 34216

34 x 21 x 6 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$75.57 / BUNDLE
IN STOCK Ship heavier loads safely with ECT-48 double wall corrugated boxes built for maximum stacking strength and freight efficiency. These 24x24x30 kraft cartons deliver superior cushioning and structural integrity for demanding warehouse operations. Bundle of 5 ships flat to maximize storage space and reduce shipping costs.
Boxes - Corrugated

24x24x30 ECT-48 Double Wall Kraft Corrugated Boxes - Bundle of 5

PN: HD242430DW

24 x 24 x 30 in ECT-48 Double Wall Corrugated 5 PER BUNDLE
$90.00 / BUNDLE
IN STOCK Engineered for tall and irregularly shaped items, these 6.75x6.75x48 double wall telescoping cartons feature an adjustable two-piece design with FOL bottom reinforcement. ECT-48 kraft corrugated construction rated for heavy stacking. Sold in bundles of 15 outer boxes (pair with T6648INNERDW inner cartons to complete your set).
Boxes - Corrugated

6.75x6.75x48 Double Wall Telescoping Boxes ECT-48 - Adjustable Tall Cartons, Bundle of 15

PN: T6648OUTERDW

6 3/4 x 6 3/4 x 48 in D.W./ECT-48 Corrugated 15 PER BUNDLE
$129.43 / BUNDLE
IN STOCK Industrial-grade 6x6x48 double wall corrugated boxes manufactured from ECT-48 kraft material deliver maximum stacking strength and impact protection for demanding fulfillment operations. Each bundle of 15 ships flat, cutting storage footprint and freight costs. Purpose-built for warehouse managers who need reliable, high-performance shipping cartons without compromise.
Boxes - Corrugated

6x6x48 ECT-48 Double Wall Shipping Boxes - Heavy Duty Kraft, Bundle of 15

PN: HD6648DW

6 x 6 x 48 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$97.26 / BUNDLE
IN STOCK Heavy-duty ECT-48 double wall corrugated boxes designed for maximum protection and stacking performance in high-volume fulfillment environments. Each 48x12x12 kraft carton delivers superior crush resistance and freight efficiency. Sold in bundles of 10 and ship flat to reduce warehouse storage footprint.
Boxes - Corrugated

48x12x12 ECT-48 Double Wall Kraft Boxes - Heavy-Duty Corrugated, Bundle of 10

PN: HD481212DW

48 x 12 x 12 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$122.26 / BUNDLE
IN STOCK Ship tall items efficiently with our 5x5x50 corrugated boxes in ECT-32 kraft material. End-load design for fast, secure packing of fishing rods, trophies, shelving, and more. Bundle of 25 boxes ships flat to maximize freight savings.
Boxes - Corrugated

5x5x50 Shipping Boxes — ECT-32 Kraft Corrugated, 25-Pack

PN: 5550

5 x 5 x 50 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$99.30 / BUNDLE
IN STOCK ECT-44 single wall kraft corrugated side loading boxes designed for warehouse efficiency and maximum freight optimization. 40
Boxes - Corrugated

40x5x45 ECT-44 Kraft Side Loading Boxes - Bundle of 10

PN: HD40545FOL

40 x 5 x 45 in ECT-44 Single Wall Corrugated 10 PER BUNDLE
$179.29 / BUNDLE
IN STOCK ECT-32 kraft telescoping inner boxes engineered for tall and irregularly shaped shipments. 8
Boxes - Corrugated

8x8x48 Telescoping Inner Boxes ECT-32 Kraft - Adjustable Design, Bundle of 20

PN: T8848INNER

8 x 8 x 48 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$68.97 / BUNDLE
IN STOCK Maximize your fulfillment efficiency with these 48x8x24 ECT-44 kraft corrugated side loading boxes. Ship and store flat to reduce warehouse footprint and freight costs by up to 40%. Bundle of 10 ready-to-assemble cartons designed for high-volume operations.
Boxes - Corrugated

48x8x24 ECT-44 Kraft Side Loading Boxes - Bundle of 10

PN: HD48824FOL

48 x 8 x 24 in ECT-44 Single Wall Corrugated 10 PER BUNDLE
$150.25 / BUNDLE
IN STOCK Ship long, narrow items efficiently with these 48x8x8 ECT-32 kraft corrugated boxes. Wide lengthwise openings reduce packing time and labor costs. Sold flat in bundles of 20 for maximum freight efficiency and storage savings.
Boxes - Corrugated

48x8x8 Shipping Boxes - ECT-32 Kraft Corrugated, 20-Pack

PN: 4888

48 x 8 x 8 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$72.19 / BUNDLE
IN STOCK ECT-32 single-wall corrugated boxes sized 36
Boxes - Corrugated

36x20x9" ECT-32 Kraft Corrugated Boxes - 15 Pack Bundle

PN: 36209

36 x 20 x 9 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$130.23 / BUNDLE
IN STOCK ECT-44 heavy-duty multi-depth kraft corrugated cartons deliver 40% greater stacking strength than standard shipping containers. Pre-scored sides adjust from full 32x24x24 depth down to smaller profiles–one SKU replaces multiple box sizes, cutting inventory and storage overhead. Includes 10 flat-packed boxes per bundle.
Boxes - Corrugated

32x24x24 ECT-44 Heavy-Duty Multi-Depth Corrugated Boxes - Bundle of 10

PN: MDHD322424

32 x 24 x 24 in ECT-44 Single Wall Corrugated 10 PER BUNDLE
$99.61 / BUNDLE
IN STOCK Heavy-duty ECT-32 kraft corrugated boxes built for industrial warehouse and fulfillment operations. These 28x28x12 shipping cartons deliver reliable stacking strength and freight efficiency in convenient bundles of 10. Recyclable material supports sustainable packaging practices.
Boxes - Corrugated

28x28x12 Shipping Boxes — ECT-32 Kraft Corrugated, 10-Pack

PN: 282812

28 x 28 x 12 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$66.20 / BUNDLE
IN STOCK Professional-grade 28
Boxes - Corrugated

28x28x8 Shipping Boxes — ECT-32 Kraft Corrugated, 10-Pack

PN: 28288

28 x 28 x 8 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$113.95 / BUNDLE
IN STOCK ECT-32 kraft corrugated shipping boxes sized 28x28x6 inches–engineered for shallow products that don't need deep cartons. Ships flat in bundles of 10 to maximize your warehouse efficiency and reduce freight costs on storage and transport.
Boxes - Corrugated

28x28x6 Shipping Boxes — ECT-32 Kraft Corrugated, 10-Pack

PN: 28286

28 x 28 x 6 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$58.99 / BUNDLE
IN STOCK Adjustable telescoping inner boxes designed for tall and irregularly shaped items. Manufactured from ECT-32 single-wall kraft corrugated with full overlap bottom reinforcement. Sold as bundle of 10–pair with T161640OUTER cartons to complete your two-piece shipping solution.
Boxes - Corrugated

16x16x40 ECT-32 Kraft Telescoping Inner Boxes - Adjustable Design, Bundle of 10

PN: T161640INNER

16 x 16 x 40 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$70.19 / BUNDLE
IN STOCK These 44
Boxes - Corrugated

44x12x12 Shipping Boxes - ECT-32 Kraft Corrugated, 15-Pack

PN: 441212

44 x 12 x 12 in ECT-32 Corrugated 15 PER BUNDLE
$96.49 / BUNDLE
IN STOCK ECT-32 single-wall corrugated boxes sized 36
Boxes - Corrugated

36x20x15 Shipping Boxes — ECT-32 Kraft Corrugated, 10-Pack

PN: 362015

36 x 20 x 15 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$111.37 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 36
Boxes - Corrugated

36x20x12 ECT-32 Kraft Corrugated Shipping Boxes - Bundle of 15

PN: 362012

36 x 20 x 12 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$131.56 / BUNDLE
IN STOCK Professional-grade 32x24x24 double wall corrugated boxes built with ECT-48 kraft material for maximum protection and stacking performance. Each bundle of 5 ships flat to maximize warehouse efficiency and reduce freight costs. Ideal for fulfillment centers handling high-volume, high-value shipments.
Boxes - Corrugated

32x24x24 ECT-48 Double Wall Corrugated Boxes - Heavy Duty Shipping, Bundle of 5

PN: HD322424DW

32 x 24 x 24 in ECT-48 Double Wall Corrugated 5 PER BUNDLE
$64.26 / BUNDLE
IN STOCK Industrial-grade 28x28x20 corrugated boxes built from ECT-32 kraft material deliver proven stacking strength and shipping protection. Each bundle includes 10 boxes, optimizing freight density and reducing per-unit costs for high-volume operations. Recyclable kraft construction meets sustainability requirements while maintaining structural integrity.
Boxes - Corrugated

28x28x20 Shipping Boxes — ECT-32 Kraft Corrugated, 10-Pack

PN: 282820

28 x 28 x 20 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$82.71 / BUNDLE
IN STOCK Heavy-duty 28x28x12 double wall corrugated boxes with ECT-48 kraft construction deliver superior stacking strength and impact resistance for demanding warehouse environments. These shipping cartons ship and store completely flat, maximizing your freight efficiency and storage capacity. Bundle of 10 boxes–the industrial standard for safe, cost-effective shipping.
Boxes - Corrugated

28x28x12 ECT-48 Double Wall Corrugated Boxes - Heavy Duty Kraft, Bundle of 10

PN: HD282812DW

28 x 28 x 12 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$209.10 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 28
Boxes - Corrugated

28x28x10 Shipping Boxes — ECT-32 Kraft Corrugated, 10-Pack

PN: 282810

28 x 28 x 10 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$110.07 / BUNDLE
IN STOCK Adjustable 8x8x48
Boxes - Corrugated

8x8x48 ECT-48 Double Wall Telescoping Inner Boxes - Adjustable, Bundle of 15

PN: T8848INNERDW

8 x 8 x 48 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$139.49 / BUNDLE
IN STOCK Ship tall items with confidence using our 8x8x48 ECT-32 kraft corrugated boxes. End-loading design enables fast, efficient packing of rods, trophies, and shelving units. Bundle of 20 ships flat to maximize your warehouse space and reduce freight costs.
Boxes - Corrugated

8x8x48 Shipping Boxes — ECT-32 Kraft Corrugated, 20-Pack

PN: 8848

8 x 8 x 48 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$78.97 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 6
Boxes - Corrugated

6x6x50 Shipping Boxes — ECT-32 Kraft Corrugated, 25-Pack

PN: 6650

6 x 6 x 50 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$128.98 / BUNDLE
IN STOCK Ship tall items efficiently with these 20x20x36
Boxes - Corrugated

20x20x36" Kraft Corrugated Boxes ECT-32 - Bundle of 10

PN: 202036

20 x 20 x 36 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$71.98 / BUNDLE
IN STOCK Adjustable telescoping outer boxes designed for tall and irregularly shaped items. 16.5x16.5x40
Boxes - Corrugated

16.5x16.5x40" Telescoping Outer Boxes ECT-32 Kraft - Tall Item Shipping, Bundle of 10

PN: T161640OUTER

16 1/2 x 16 1/2 x 40 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$74.28 / BUNDLE
IN STOCK Adjustable two-piece telescoping outer boxes designed for tall, irregularly shaped items up to 48
Boxes - Corrugated

8.5x8.5x48" Telescoping Outer Kraft Boxes ECT-32 - Adjustable, Bundle of 20

PN: T8848OUTER

8 1/2 x 8 1/2 x 48 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$75.35 / BUNDLE
IN STOCK Specialized 36x21x20 corrugated wardrobe boxes designed to ship or store garments while still hanging on their bars–eliminating costly folding labor and damage. ECT-32 single-wall kraft construction delivers durability for retail logistics and relocation. Sold in convenient bundles of 5 with orientation arrows and delivery panels pre-printed.
Boxes - Corrugated

36x21x20 ECT-32 Kraft Wardrobe Boxes - Hanger-Ready Storage, Bundle of 5

PN: 362120

36 x 21 x 20 in ECT-32 Single Wall Corrugated 5 PER BUNDLE
$36.91 / BUNDLE
IN STOCK Engineered for height-critical shipments: ECT-48 double wall telescoping outer cartons with adjustable two-piece design fit tall and irregular products precisely. FOL reinforced bottom delivers superior stacking strength. Bundle of 15 kraft corrugated boxes ready to pair with matching inner cartons.
Boxes - Corrugated

8.75x8.75x48" ECT-48 Double Wall Telescoping Outer Boxes - 15/Bundle

PN: T8848OUTERDW

8 3/4 x 8 3/4 x 48 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$154.04 / BUNDLE
IN STOCK Ship or store garments directly on hangers with zero rehandling. These 36
Boxes - Corrugated

36x21x10 ECT-32 Kraft Wardrobe Box - Hanger-Ready Shipping, 10-Pack

PN: 362110

36 x 21 x 10 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$84.67 / 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 ->