E-flute corrugation is only 1/16th " thick, much thinner than the C-flute mentioned above. On some requirements, F-flute or B-flute corrugated may be used. F-flute is very thin (even thinner than E-flute) and is used for very small paper gift boxes or boxes that require intricate die cutting. Surprisingly, B-flute is thinner than C-flute but thicker than E-flute. B-flute is about 1/8th" thick and is used for heavier weight projects.

Corrugated board is usually stocked by the mill and is defined by colors. Brown, Oyster White, White.

White is the most expensive board wholesale cake boxes and most sought after for graphic usage.


Combinations are available, by special order. Oyster over Kraft or Bleached over Kraft are common. Normally the wavy part of the corrugated board is Kraft.