This is an OEM extra capacity hanging file folder designed for letter-size documents. It features SureHook Technology with built-in tension springs to ensure folders stay on track and slide with ease. The folder offers superior durability with polylaminated strips on the top and bottom, and it has a 2" expansion with a pressboard-reinforcing insert. Made from assorted materials, it contains 10% total recycled fiber with 10% post-consumer fiber and is acid-free. Each box contains 20 folders.