Isotropic : Orients the individual layers in multiple directions, resulting in a panel that strikes an excellent balance between longitudinal and torsional stiffness.
Balanced longitudinal and torsional stiffness
For most applications
Bidirectional : Simpler construction: placing the fibers in two directions only. The resulting component is longitudinally stiffer, while sacrificing some torsional stiffness.
High longitudinal stiffness
Lower torsional stiffness
NOTE* Panels may be up to 1/8" under listed sizes due to saw kerf