Corrugated Boxes: Sizes, Materials and What to Specify

Key Takeaways

  • A corrugated specification has six parts: style, wall construction, flute, print method, closure and palletisation. Give all six and a quote comes back without a round of questions.
  • Style is the biggest fork. A slotted shipper, a die cut mailer, a wrap and a tray behave differently and cost differently for the same internal size.
  • Print method follows the board: flexo direct printing suits plain and simple graphics, litho lamination suits full colour retail work on fine flutes.
  • iBox Factory prints corrugated from a 100 box minimum with the die, plates, design support and a digital proof included.

To order, see corrugated boxes. This guide is the specification checklist: six decisions, in the order a quote needs them.

1. Style

StyleWhat it isSuits
Regular slotted containerThe classic shipper, flaps meeting at the centreGeneral shipping, cases, bulk
Die cut mailerOne piece, folds up and tucks closed, no tapeEcommerce, printed brand packaging
Five panel folderA wrap with double thick endsLong, flat, narrow products
Tray and lidTwo piece, open tray with a separate coverProduce, retail display, heavy flat goods
Telescoping boxAn outer sleeve over an inner baseOversized or variable height contents

2. Wall construction

Single wall covers most retail and ecommerce work. Double wall doubles the flute layers and is the answer for heavy contents, long transit or repeated handling. Triple wall exists for industrial loads. The step up in wall also steps up the external dimensions, so check the pallet fit again after you change it.

3. Flute

Flute is the wave between the liners. E is about 1/16 inch and prints finest, B is about 1/8 inch and resists crushing, C is about 3/16 inch and is the general shipping workhorse, A is about 1/4 inch for cushioning bulky light goods, and BC double wall is about 5/16 inch. The comparison that comes up most is covered in detail in E flute vs B flute.

4. Print method

  • Flexo direct: ink printed straight onto the corrugated. Efficient, best for one to three colours and simple graphics.
  • Litho lamination: a printed sheet laminated to the board. Full colour, photographic quality, used on E flute retail packaging.
  • Digital: no plates, good for short runs and variable designs, with a different colour character from offset.
  • Unprinted: plain kraft with a stencil or a label. Cheapest, and entirely appropriate for an inner case.

5. Closure

Tape, glue, tuck and lock, or strapping. Each has a cost at your end as well as ours: a tuck and lock mailer needs no tape and no machine, a glued case needs a gluer, a taped RSC needs tape and a person. If your team packs by hand at volume, closure speed is worth more than a small saving on board.

6. Palletisation

Give us the case count and the pallet pattern if you have one, or the shipping profile if you do not. The North American pallet deck is 48 x 40 inches, and a box footprint that tiles it cleanly reduces freight cost on every shipment. Cube utilization explains how much that is worth.

Minimum, price and lead time

The minimum is 100 boxes. Pricing starts from about $0.48 per unit at bulk volumes and is confirmed on your written quote. Turnaround is quoted per product across three lanes: rush, which is expedited production plus air freight at a premium of roughly 7 to 25 percent depending on the job, standard on air, and cost saver on sea, from about 7 business days in production plus 2 to 5 days for delivery. Production runs from West Chicago in the United States and Guangzhou in China, and the die, the plates, design support, US shipping and a digital proof are included.

To order, see corrugated boxes. For internal versus external sizing and pallet arithmetic, read corrugated shipping box dimensions, then send the six fields above with a quote request.

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Free die and plates, free design support, free US shipping. Minimums from 100 boxes.