With an aramid honeycomb core sandwiched between carbon fiber or fiberglass for rigidity, these panels are strong, but lightweight, and won’t conduct heat. Often used as wall panels in structural and insulating applications, they’re a lightweight alternative to solid composite and aluminum honeycomb panels.

Carbon-fiber-faced panels are stronger and more rigid than fiberglass-faced panels, so they resist deforming from bending, twisting, or buckling. They will, however, splinter from high-impact blows. These panels are lighter than fiberglass-faced panels. However, they conduct electricity, so don’t use them around electrical components.

Fiberglass-faced panels are often used around electrical components because they are good electrical insulators. They resist cracks from bumps and hits better than carbon-fiber-faced panels, but are not as strong or lightweight.