Made in USA KettlePizza Deluxe USA Pizza Oven Kit for Kettle Grills - Includes Stone and Metal Peel, KPDU-22 Transforms 18.5" or 22.5" kettle grills into a pizza oven Heat remains stable because lid does not need to be removed to access food Made of 20 gauge, 304 grade stainless steel. Made in USA Kit includes stainless sleeve, handles, thermometer, aluminum pan, 15" cordierite stone and aluminum pizza peel Works with charcoal or hardwood