One 185mm wide Ultra Pro One-Touch Magnet Card Holder with Special UV Barriers for reduced light exposure to help maintain and store thick relic, patch and autographed cards. For most baseball, football and other sports horizontally opening booklet trading cards with 2-1/2" X 3-1/2 dimension on each of left and right panel. Laboratory Tested, Ultra Clear and Frosted Border. Fits cards that open to a total width of 185mm.