Best Quality Guranteed. Outer Size: 9-1/2' x 3-1/2' height; Inner Size: 9' dia. x 3-1/2' height. Made of cast aluminum for even baking. Nonstick coating allows easy release and quick cleanup. Dishwasher safe; Recommend hand wash in warm, soapy water before first and after each use. Quality fluted tube pan to create your special and attractive cake.