Many boxes accept standard letter-size (8.5 × 11 in), and several listings explicitly note they can accommodate both letter and legal-size files.
Security features vary but commonly include combination or password locks, double zippers, durable latches, and designs that allow a small padlock or zip tie to be added for extra security.
Organization features vary by style: fabric/file safes may include multiple pockets, passport and card slots, and mesh pouches; metal or tool-style boxes can have multiple drawers; plastic and mesh boxes often provide internal rails for hanging folders, label holders, and in-lid compartments for small items.
Review summaries frequently describe many boxes as sturdy and well-constructed, noting secure lids, reinforced corners, and long-lasting use for a range of styles.
Some boxes are designed to be stackable (several plastic file boxes mention indexed covers for stacking), while a few fabric or soft-style boxes are collapsible or foldable for compact storage.
