The Weber Original Gourmet BBQ System pizza stone is designed to be used on your Weber 22.5-inch charcoal grill. Simply remove the 12-inch center cooking grate insert and replace it with this pizza stone. You"ll give your homemade pizzas a delicious, smoky flavor your whole family will love. Made from cordierite, this stone absorbs moisture as it cooks, producing a light, flaky crust. The included rack makes transport easy and efficient. For more information, call the Weber Grill-Lines at 1-800-GRILL-OUT.