Chicago Metallic Commercial II Non-Stick 12-Cup Muffin Pan Made from heavy-weight aluminized steel for superior heat conduction and even baking Diamond-quality, non-stick dual-coating Features a rolled rim to prevent warping 12 cup muffin pan measures 15.75-inch by 11-inch; each muffin cup measures 2.75 diameter by 1.25-inch high Dishwasher safe, however hand-washing is recommended to extend product life