Electrically insulating fiberglass epoxy laminates have properties that protect against static and electrical charge as well as arc flash. Fiberglass is a plastic resin that's reinforced with glass fibers for added strength and stability, and is considered a type of fiber-reinforced plastic (FRP). Fiberglass epoxy flat bars are strong, hard, and have rectangular or square cross sections. Fiberglass epoxy sheets and plates are solid, flat pieces with no surface texture. Fiberglass epoxy rods are solid, round pieces that can be cut-to-length for specific applications.