'Flute' is the corrugation between the internal and external lining papers of the board. The various flutes available offer different properties over each other such as Compression, Crush or Burst strength, Print-ability or storage space.
Board thickness approximately 3mm.
The most widely used flute profile due to its all round compression strength, compactness, printability and cost effectiveness.
Board thickness approximately 4mm.
A larger flute than 'B' offering greater compression strength, but can be more easily crushed.
Board thickness approximately 7mm.
A combination of 'B' and 'C' flute is normally used when compression and stacking strength is important.
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