This Fileback divider has a built in 1/2 pocket that measures 4 1/2” in height on the outside front for storing papers and computer disks. Divider has a 2” bonded fastener for installing papers or another divider. Made from sturdy 11pt manila stock. Overall size (with flap): 8 1/2”w X 12” H. 8 1/2” X 11” When installed into folder. 100 Fileback dividers per box.