Reference
The wave glued between the liners is what makes corrugated board work. It sets how the pack cushions, how high it stacks, and how well it prints. Choose it first and the rest of the specification follows.
A tall flute traps more air, so it absorbs impact and resists stacking load. A short flute puts more glue lines under the same area of liner, which makes a flatter, denser surface that prints cleanly and folds crisply. You are almost always trading one against the other, and the right answer depends on whether the box has to survive a pallet or look good on a doorstep.
One fluted layer between two liners. Heights are nominal and vary between mills.
Coarse flute
The tallest common profile. Best cushioning and stacking strength of the single walls, at the cost of bulk and a poor print surface.
Medium flute
The general shipping standard across Europe. Sits between A and B on every axis, which is exactly why it is the default when nothing pushes the specification either way.
Fine flute
Good crush resistance and a noticeably better print surface than C. The workhorse for ecommerce cartons, takeaway and anything die-cut.
Micro flute
Thin enough to behave like a folding carton while keeping corrugated rigidity. The usual choice where the box is part of the product experience.
Ultra-micro flute
Finer again than E, for small, premium formats where wall thickness is visible and print quality is the point.
Two fluted layers and three liners. Named by the profiles used, coarser first.
Heavy duty double wall
The standard export and heavy-goods board. Stacks high and takes rough handling; too thick for fine print or tight die-cut detail.
Print-and-strength double wall
An E outer for the print surface over a B inner for strength. Specified where the pack has to survive transit and still present well when it arrives.
Single face
One liner and one flute, unlined on the other side. Flexible, sold in rolls, used for wrapping and protection rather than boxes.
Single wall
Liner, flute, liner. The construction behind the great majority of boxes in circulation.
Double wall
Two flutes and three liners. Where single wall runs out of stacking strength.
Triple wall
Three flutes and four liners. Industrial loads and formats that would otherwise need a crate.
Profile letters and wall constructions follow standard European corrugated practice. Exact heights are specified per order.
Describe the product, how it ships and how it is stored, and we will specify the board against it. That conversation is usually faster than reading another table.