4" x 6" Rectangle: 5.75" wide x 8" tall (3.5" x 5.5" opening size) 4" x 6" Oval: 5.5" wide x 7.25" tall (3.5" x 5 7/8" opening size) 5" x 7" Rectangle: 6.5" wide x 8.5" tall (4" x 6" opening size) 5" x 7" Oval: 6.75" wide x 9" tall (4.5" x 6.5" opening size)
