5-1/4" x 4", 4-3/4" x 3-1/2", 4-1/4" x 3", 3-3/4" x 2-1/2", 3-1/4" x 2", 2-3/4" x 1-1/2", 2-1/4" x 1", 1-3/4" x 1/2"