Pet food packaging covers everything from a 3 oz single serve pouch to a 30 lb bag of kibble, and the sizing method changes completely across that range. What they share is that weight, not appearance, sets the specification. Get the gross weight right and the rest of the decisions fall into place.
Start with the filled weight
Weigh the filled unit, then multiply by the case count. That gross figure decides three things at once: the board grade, whether the case is single or double wall, and how many layers high it can be stacked in a warehouse without crushing the bottom row.
Corrugated shippers conventionally carry a box maker's certificate stating a maximum gross weight for that construction. Ask for that number in writing on your quote rather than accepting a description like heavy duty. It is the only way to compare two quotes on equal terms.
Volume, for the three common formats
| Format | What sets the internal size | Watch out for |
|---|---|---|
| Kibble or treats in a bag | The filled bag, not the flat bag. A filled bag is far thicker and shorter than the flat dimension suggests | Settling. Fill, seal, drop it once, then measure |
| Wet food in cans or trays | Unit diameter or footprint x the pack pattern | Weight per case climbs fast, so check board grade early |
| Single serve pouches | Pouch thickness when filled, multiplied by count | A stack of pouches compresses, so a snug case is fine |
For anything in a flexible bag, this is the number one error: people measure the empty bag laid flat, order a shallow box, and discover the filled bag will not sit below the flaps.
Retail carton or shipper, and sometimes both
A printed retail carton that sits on a shelf and a corrugated case that travels on a pallet are different products. If the same box is doing both jobs, which is common for subscription and direct to consumer pet brands, say so up front. That box needs corrugated strength and retail print quality at once, and the honest answer is usually a printed corrugated mailer rather than a folding carton.
Fit the pallet before you cut the die
A standard US pallet is 48 x 40 in, which is 1,920 square inches per layer. Divide that by your case footprint and you will see immediately whether you are wasting a lane. A case that is an inch too long in one direction can cost you a whole column per layer, which compounds over every truck you ship for the life of the die. Because the die is included at iBox, adjusting the case by half an inch to gain a column costs nothing in tooling. Our page on how many boxes fit on a pallet sets out the arithmetic.
Ordering, minimum and turnaround
Minimum order is 100 boxes, from about $0.48 per unit at bulk volumes, confirmed on your written quote. Board grade and print coverage are the big movers on a pet food case. Die and plates, design support, US shipping and a digital proof before anything prints are included.
Turnaround runs in three lanes: rush (expedited production plus air freight), standard (air) and cost saver (sea), from about 7 business days plus 2 to 5 for delivery, with specialty imported items up to about 12 weeks. Rush carries a premium of about 7 to 25% depending on the job. Production is in West Chicago and Guangzhou, so a US run and an overseas run are both on the table depending on volume and timing. To order, see pet food boxes.
If anything in the box touches food directly, tell us at quote stage so the liner, coating and inks can be specified for that use and confirmed for your market. Send the filled unit weight, the case count and your pallet pattern, and request a quote.
