Business Source 1/5 Tab Cut Letter Hanging Folders - 8 1/2" x 11" - 3" Expansion - Standard Green - 25 / Box - Hanging Box-bottom File Folders offer an advanced design with a pressboard reinforcing insert at the bottom. Ideal for handling a variety of bulky records and letter-size documents. Each hanging file folder includes tabs and inserts. Simply slip the tabs into the pre-cut slots on the inside of the folder tops. Folders contain post-consumer recycled material.