plastic expandable folders

Sterilite Portable File Box, Stackable Storage Bin with Latching Lid and Handle, Plastic Container to Organize Papers in Home, Office, Black, 4-Pack

JAM 6pk 2 Pocket Heavy Duty Plastic Folders - Blue: Stationery, Office, Non-Pronged, 100 Sheet Capacity, 12x9, 2 Pockets

JAM 6pk 2 Pocket Heavy Duty Plastic Folders - Yellow: Stationery, Non-Pronged, 100 Sheet Capacity, Internal Pockets