The BCW 1" THICK Acrylic Card Holder has all the advantages of the traditional four screw card holder and is an attractive way to store and display your most valuable trading cards. BCW acrylic holders contain U.V. absorbers to help protect your collection from ultraviolet yellowingDimensions- Exterior 3-1/2" x 5-3/4"- Interior 2-1/4" x 4-1/2"