This Fileback divider sheet features a 1/2 pocket on the outside front that measures 4 1/2" in height, the perfect size for securely keeping documents and CD's protected and organized. The divider features a 2" bonded fastener used for adding other documents or dividers, making it great for storing many items in multiple sections. The pocket fileback dividers measure 8 1/2” x 12” with extended flap, but are reduced to 8 1/2” x 11” when installed into a folder. One box contains 100 fileback dividers.