The reversible cast iron cooking plate allows you to add a different kind of cooking surface to your Monument Grill. Perfect for searing meats, and cooking fish or vegetables for family or friends. The 9.45 x 17.7 cast iron construction provides great heat retention. Reversible as one side is smooth and the reversed side is ribbed. Works on all gas or charcoal grills with a cooking surface larger than 10 x 18 .