Replacement part for the Cobb Pro, Compact & Premier. Fits on top of the base. Hard plastic. Grommets NOT included. The grooves for the grommets are located above the rubber feet (or the flat metal panels on the sides.) Position correctly and press down to install. Before the use of the grill, install grommets. The grommets slide into the grooves (above the feet) in the top ring with the highest rounded point to the inside.