Single wall corrugated cardboard:
Flute F - Cardboard thickness 1,0 mm
Flute E - Cardboard thickness 2,0 mm
Flute R - Cardboard thickness 2,3 mm
Flute B - Cardboard thickness 3,0 mm
Flute C - Cardboard thickness 4,3 mm
Double wall corrugated cardboard:
Flute EB - Cardboard thickness 5,0 mm
Flute EC - Cardboard thickness 6,3 mm
Flute BC - Cardboard thickness 7,3 mm
Flute BA - Cardboard thickness 8,3 mm
Flute AC - Cardboard thickness 9,6 mm
Triple wall corrugated cardboard:
Flute CBE - Cardboard thickness 9,3 mm
Flute ABE - Cardboard thickness 10,3 mm
Flute BCB - Cardboard thickness 10,3 mm
Flute BBA - Cardboard thickness 11,3 mm
Flute A - Cardboard thickness 5,3 mm
And many other cardboards on request...