Approximate Sizes: Largest Rectangle: 3.5"" w x 4 11/16"" h (Postage Mat Layer: 3"" w x 4 3/16"" h) 2nd Largest: 2 11/16"" w x 3 7/8"" h (Postage Mat Layer: 2 1/4"" w x 3 7/16"" h) 3rd Largest: 1 15/16"" w x 3 1/16"" h (Postage Mat Layer: 1 7/16"" w x 2 5/8"" h) 4th Largest: 1 1/8"" w x 2 5/16"" h (Postage Mat Layer: 11/16"" w x 1 13/16"" h)
