FasTab hanging box bottom folders have built-in reinforced tabs permanently attached to the folder; no assembly required! They are easy to label by either handwriting directly on the tab or applying standard self-adhesive labels. Use them for catalogs, manuals and booklets. Great for storing bulky documents. Features built-in heavy-duty tabs for quick and easy labeling. No plastic tabs required. Stronger than standard hanging folders. Expands up to 2" for greater storage capacity.