Hard-working interior file folders fit inside hanging folders without obscuring tabs. Perfect for subdividing records within a hanging folder. Two-tone design helps prevent misfiles and is reversible to double your color options. 11 pt. stock. File Folder Size Type: Letter File Folder Color: Manila Color Family: Manila File Folder Material: 11-pt Stock. Green : Paper contains 10% post-consumer recycled content, 10% total recycled content.