Initiate Raceway Panel features Nature Core fiberboard, a Class A fire rating, I-connectors and a 2” thickness. Nature Core is a nonwoven composite material made up of a blend of natural and synthetic fibers. Panel is made with extruded aluminum uprights with top and bottom rectangular steel tubes. Baserail cover matches trim color. Baserail end covers must be ordered separately. Panels may be connected end-to-end or with Wall Starter Kit.