Granite Ware Porcelain Enamel Covered Roaster 20 lb Black (Pack of 4)Granite Ware has a porcelain enamel surface over a carbon steel body. The steel core is an excellent heat conductor and gives an even heat distribution for faster cooking times. The porcelain surface is nonstick and contains no harmful chemicals. UPC: 072495005105 Manufacturer Part No: 319807 Product Type: Covered Roaster Color: Black Length: 19 in. Nonstick Interior: Yes Dishwasher Safe: Yes Width: 13. 5 in. Heat Resistant Handles: No Height: 8. 5