Granite Ware roasters are "America's Favorite Roaster"! Granite Ware has been a part of the American Kitchen for nearly 150 years. It is made in Indiana by a family owned factor and it is the original speckled cookware that has helped generations of families turn holiday feats and everyday meals into cherished memories. Granite Ware is made by fusing porcelain to a steel core at 1500-degree F. The steel core provides strength and even heat distribution while the porcelain surface is inert and naturally nonstick. Porcelain is all natural and will not alter the color, taste or nutritional value of your food. There is no PTFE, PFOA or other unhealthy chemicals in Granite Ware products. The Granite Ware Blue Large Covered Oval Roaster fits a 18 lb turkey or poultry. Do not use on glass cooktop but it is safe to use with all other heat sources. Dishwasher safe. Metal tool safe. Interior dimensions: 15†x 10.75†x 4â€. Exterior dimensions: 18" x 12.25" x 4.25".