Fileback dividers make organization of large file folders simpler and more efficient. Individual fasteners on each divider offers the ability to add and/or delete any sections without disturbing information in other sections. This allows for a more efficient and accurate filing system. These easy to use end-tab or side-tab chart dividers come with pre-printed tab titles and are colored coded for easy identification. Tabs feature industry standard titles plus one write-on erasable blank tab allowing you to create a customized tab that works for you. Filebacks are available with 8 dividers per set. Each divider comes with a prefixed 2" fastener that makes adding and removing documents faster and easier, and they are pre-punched and Mylar reinforced so each one piggybacks onto the preceding one. Dividers are constructed of sturdy 110 lb. manila stock. Installed size: 8 1/2" x 11 1/8" with tabs extending an additional 1/2". Sets come pre-collated and packed 20 sets per box.