The “Flute” describes the structure of the wave shaped cardboard material (medium) that makes up a boards corrugation.
Linerboard is the “flat facing” that adheres to the medium. The three most common flute sizes are B, C, & E. Find out more about corrugated board.
Corrugated Flutes
![E flute, B flute, and C flute are all cardboard grades that refer to different thicknesses of the corrugated material used in manufacturing packaging boxes.](https://www.boxfactory.com.au/wp-content/uploads/2023/02/Web-Flutes-2.png)
Flute | Profile | Thickness | Comments |
C | 3-4mm |
Uses: Glass, furniture, dairy | |
B | 2-2.5mm |
Uses: Canned goods, displays | |
E | ![]() | 1-1.2mm |
Uses: Canned goods, displays |
BC | 5-6mm |
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