Standard: 17" x 8" x 1.25" One line version can hold up to five 4" numbers. Two line version can hold up to five 3" numbers and seventeen 1.25" characters. Estate: 22.5" x 10" x 1.25" One line version can hold up to five 5.5" numbers. Two line version can hold up to five 4" numbers and seventeen 1.75" characters