largest (outside): 4 1/2¡± x 4 1/2¡± ; (inside): 4¡± x 4¡± large (outside): 3 1/2¡± x 3 1/2¡± ; (inside): 3¡± x 3¡± medium (outside): 2 1/2¡± x 2 1/2¡± ; (inside): 2¡± x 2¡± small (outside): 1 1/2¡± x 1 1/2¡± ; (inside): 1¡± x 1¡±