Cereal packaging is a bag in a box, and almost every sizing mistake comes from designing the box first and discovering the bag afterwards. Start at the bag. This guide is about specification; the cereal boxes product page is where to order.
Ask your filler four questions
- What is the filled bag's width across the face, and its height, at the target fill weight?
- How thick is the bag once filled and settled, at the gusset?
- Will the bag be filled inside the carton, or filled separately and inserted?
- Does the bag get sealed at a fixed height, or does the seal move with fill weight?
Those four answers give you the internal dimensions. Add a little clearance, since a filled bag needs room to settle and a carton that grips the bag is hard to fill on a line.
Face width against depth
A given volume can be a wide shallow box or a narrow deep one. Wide gives more shelf facing and more design area, and takes more shelf space per unit, which retailers notice. Narrow and deep gives you less facing but more units per shelf run. Decide this with your buyer, not on your own, because the fixture and the planogram often dictate it. Check the fixture depth you will be placed on: common retail gondola shelves are built in depths around 16, 18 and 22 in, and a box deeper than the shelf is a problem nobody wants to discover at set up.
Board, and why a tall panel needs caliper
| Symptom | Likely cause | Fix |
|---|---|---|
| Box leans or bows on the shelf | Caliper too light for the panel height | Move up a caliper, or reduce the panel height |
| Top edge creases in handling | Unsupported panel plus a loose bag | Heavier board, or a bag that fills the carton properly |
| Carton bulges at the base | Bag settling into the corners | Allow settling room in the internal depth |
| Flaps pop open in transit | Tuck closure carrying too much weight | Glued seal end construction |
Most cereal cartons run as glued seal end boxes for exactly that last reason. A tuck closure relies on friction and a full cereal carton is heavy enough to defeat it.
Print and the panels that have to be there
Cereal cartons carry a lot of mandatory and semi mandatory information: net quantity, ingredients, nutrition panel, allergen statement, preparation and storage. Lay those out first at legible type sizes, then design around what is left. Side panels are valuable and often wasted. Keep the nutrition panel out of the fold area, and mark any area that will carry variable data such as a batch code or a date so it stays clear of heavy ink.
Materials and finish
Standard white cardstock is the usual choice for full colour photographic work. Kraft eco friendly brown cardstock suits a natural or granola positioning, at the cost of colour shift. Finishing options include gloss and matte lamination, spot UV, foil stamping and embossing. Keep the inside face clean and food appropriate for your market, and confirm any food contact requirement with your own adviser, since we build to the spec you give us rather than certifying compliance.
Ordering
The minimum is 100 boxes, pricing runs from about $0.48 per unit at bulk volumes confirmed on your written quote, and the die, plates, design support, US shipping and a digital proof are included. Turnaround is quoted per job 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.
Order on the cereal boxes page, or send the bag measurements to the quote form for a structure first. Related: cereal box dimensions.
