The word Flute in corrugated describes the arch shaped paper medium that
makes up the sheet's corrugation.
Standard Corrugated Flutes
Flute Cross Section
Flute Designation
Flute Thickness
A Flute
1/4"
B Flute
1/8"
C Flute
3/16"
E Flute
1/16
The chart on top shows different Flute Cross Section and their
Thickness.
The highest flute size is offering excellent cushioning and crush
resistance.
