This Granite Ware is 18in. the covered oval roaster is ideally suited for a 12-pound bird or a 15-pound roast, it boasts even heating and faster cooking times. It browns better and cooks more evenly than any other roaster, due to its dark interior which absorbs all the oven's energy, the steel core evenly distributes the heat and the glass interior doesn't alter the taste. Since the glass surface is inert and will not absorb foods, the taste is not altered as it can be with other surfaces. Safe for metal utensils, easy to clean, and dishwasher safe! Continue a tradition passed down through the generations with Granite Ware 18 in Covered oval roaster. There is a Granite Ware roaster perfectly suited for any size meal, oven, or food preparation method. Whether grilling, broiling, baking, or roasting, we have a size and configuration to handle the task. Our roasters are equally at home in the oven or on the grill. The lid works as a roaster too! It cooks faster and more evenly than other roasters and is a better value than stainless steel roasters.