Made specifically for the hardcore KettlePizza user in partnership with Baking Steel. The KPBS-22 is a 3/16" thick round steel used to provide higher dome temperatures in your KettlePizza oven. The steel radiates heat very rapidly and provides a very hot ceiling for getting quick crisping of the top of your pizzas. Used in conjunction with the KettlePizza ProGrate users can expect cooking cycle times in the 4-5 minute range. Openings on the side allow adequate oxygen flow and allow easy refueling.