Large Cardboard Boxes (18"+)
15x15x20 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack
PN: 151520
6x6x29 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack
PN: 6629
18x18x3 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack
PN: 18183
16x16x19 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack
PN: 161619
22x14x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack
PN: 22144
20x16x14 ECT-44 Kraft Heavy-Duty Corrugated Shipping Boxes 15-Pack
PN: HD201614
20x16x9 ECT-32 Kraft -B Corrugated Shipping Boxes 25-Pack
PN: 20169
18x18x12 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack
PN: 181812
18x18x2 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack
PN: 18182
30x6x6 ECT-32 Kraft Corrugated Long Shipping Boxes 25-Pack
PN: 3066
26x10x10 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack
PN: 261010
24x12x18 ECT-32 Kraft Single Wall Corrugated Shipping Boxes 20-Pack
PN: 241218
24x12x16 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack
PN: 241216
24x12x12 ECT-32 White Corrugated Shipping Boxes
PN: 241212W
24x12x12 ECT-32 Multi-Depth Kraft Corrugated Shipping Boxes 25-Pack
PN: MD241212
24x12x10 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack
PN: 241210
24x12x6 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 20-Pack
PN: MD24126
24x12x6 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack
PN: 24126
24x12x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack
PN: 24124
22x14x14 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack
PN: 221414
22x14x12 ECT-32 Kraft Corrugated Boxes 20-Pack
PN: 221412
22x14x10 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack
PN: 221410
22x14x6 ECT-32 Kraft Corrugated Boxes 20-Pack
PN: 22146
21x15x15 ECT-32 Kraft Corrugated Heavy Duty Shipping Boxes 20-Pack
PN: 211515
20x16x16 ECT-32 Kraft Corrugated Heavy Duty Shipping Boxes 15-Pack
PN: 201616
20x16x14 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 20-Pack
PN: MD201614
20x16x14 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack
PN: 201614
20x16x12 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack
PN: 201612
20x16x10 ECT-32 Kraft Corrugated Heavy Duty Shipping Boxes 25-Pack
PN: 201610
20x16x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack
PN: 20164
18x18x16 ECT-32 Kraft Deluxe Moving Boxes 20-Pack
PN: 181816DPB
18x18x16 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack
PN: 181816
18x18x15 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack
PN: 181815
18x18x14 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack
PN: 181814
18x18x12 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 20-Pack
PN: MD181812
18x18x10 ECT-32 Kraft Corrugated Heavy Duty Shipping Boxes 20-Pack
PN: 181810
18x18x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack
PN: 18188
18x18x6 ECT-32 Kraft Adjustable Multi-Depth Corrugated Shipping Boxes 20-Pack
PN: MD18186
18x18x6 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack
PN: 18186
18x18x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack
PN: 18185
18x18x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack
PN: 18184
18x12x6 ECT-32 Multi-Depth Kraft Corrugated Shipping Boxes 25-Pack
PN: MD18126
28x8x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack
PN: 2888
26x10x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack
PN: 26104
24x12x12 ECT-48 Double Wall Hand Hole Boxes 15-Pack
PN: HD241212DWHH
24x12x12 ECT-44 Kraft Heavy-Duty Corrugated Shipping Boxes 25-Pack
PN: HD241212
24x12x12 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack
PN: 241212
24x12x8 ECT-48 Double Wall Corrugated Boxes 15-Pack
PN: HD24128DW
Product Help Request
Send the SKU, quantity, delivery ZIP, and any required specs so we can route the request.
Overview
Compare large cardboard boxes by the complete packed item, listed dimensions and purchase quantity. The selected formats below include 18-inch and 20-inch cartons with different bundle counts.
Measure the complete packed item, including the cushioning and closure your process requires. Compare that measurement with the exact product’s usable interior. The examples below distinguish explicit inside dimensions from a listed size that still needs confirmation.
Compare selected current box formats
| Exact SKU | Dimensions | Listed board / construction | Boxes per unit | Fit evidence |
|---|---|---|---|---|
| 181818 | 18 × 18 × 18 | ECT-32 | 20 | Inside dimensions explicit |
| 202020 | 20 × 20 × 20 | ECT-32 | 10 | Listed size; confirm usable interior |
| 201812 | 20 × 18 × 12 | ECT-32 | 10 | Listed size; confirm usable interior |
ECT is an edge-crush rating of the corrugated board. It does not establish a finished carton’s safe payload, drop resistance or stacking limit. Keep wall construction separate from ECT, and evaluate the complete package for the item, storage and shipping method.
Measure the finished parcel, too
Inside dimensions help check the item’s fit; outside dimensions are relevant to carrier rating. Confirm the closed parcel’s outside measurements, weight and service before comparing shipping costs. A larger carton may change dimensional pricing, but size alone does not determine the charge.
Choose double wall because the complete packaging specification calls for it, rather than using a generic 40- or 65-pound cutoff. ECT-44 is a board grade and does not by itself mean double-wall construction.
Plan whole bundles
Box purchase-unit calculator
Whole purchase units = round up(boxes needed ÷ boxes per unit). The count must come from the selected SKU, not the box size. Quantity planning does not confirm fit or payload.
For 120 boxes, a 20-count format requires six units. A 10-count format requires twelve. Compare the same required count, then include the surplus produced by whole-unit rounding. A lower bundle price does not necessarily mean a lower delivered price per box.
For a bulk or wholesale shipping-box order, send each SKU, required boxes or bundles, destination ZIP, required date and receiving conditions. Include residential or commercial delivery, dock or forklift access, and any liftgate or appointment requirement. Compare actual checkout shipping or a written delivered quote. No freight rate is inferred from size alone.
Questions before ordering
Can I buy by the individual box?
These examples are sold in the purchase counts shown. The product page establishes the order unit and current ordering details.
Does a stronger ECT number mean I can pack more weight?
A board rating alone cannot answer that. Confirm wall construction and the complete packaging requirements for your shipment; test the packed item where appropriate.
How should I compare two suppliers?
Match usable size, construction, grade and boxes supplied. Divide the merchandise total plus actual shipping and applicable fees by boxes supplied, using the same tax treatment for both orders.
Continue your buying plan
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.
Use filters and product titles to narrow by the specs that affect fit.
Open the product page before ordering a case so you can check quantity, unit, and limits.
Save the SKU or product link for repeat purchasing and support questions.
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