The Weber Dutch Oven Duo brings you heat retention and even heating Dutch Oven with a flat top lid that can also be used as a griddle. The Dutch Oven Duo is made with porcelain-enameled cast iron, making it easy to clean and have long-lasting use. Pieces can be used together or separately. For use with the Gourmet BBQ System on Weber 22-inch Charcoal Grills, SmokeFire wood-fired pellet grills, Spirit, Genesis/Genesis II, and Summit gas grills. NOTE: Only the Dutch Oven base fits into the Gourmet BBQ System grates.