This Marvel Cake Pan Lid fits Wilton’s® 11 x 15 in. performance cake pan (model 2105-158 which can be found on the bottom of your Wilton cake pan). Simply snap the lid over the cake pan and bake your cake for the recommended time and get a marvelously flat cake, ready for icing and decorating. No cutting excess cake dome and wasting cake. Follow the recommended amount of cake mix use for the size of cake pan you are using. Cake mix use will be less than the usual/recommended amount. Save on cake mix, no waste, and have your marvelously flat cake too!