The OEM Saunders Archboard SAU05712 is designed for organizing and holding letter-size and A4-size papers. It features unique Lock-O-Matic dual arch rings and a 1/8" brown hardboard construction. The locking feature on the rings prevents accidental opening, ensuring your documents stay secure. With a smooth finish on both the front and back, this archboard offers a 2-1/2" capacity for your paperwork.