10 Best Portable File Boxes 2025 in the United States

The IRIS USA File Box Slim with Lid is a versatile and practical solution for organizing and transporting documents. Measuring 13.38 inches long, 6.5 inches wide, and 11.75 inches high, this file box fits letter-size hanging file folders and provides a convenient ledge for easy access and organization. The included 4-compartment lid organizer is a thoughtful addition, allowing users to store small office supplies such as pens, thumbtacks, and clips efficiently.

Portability is a key feature of this file box, thanks to its sturdy handle that makes it easy to carry, and its lightweight design at just 1.55 pounds adds to the convenience of transport. The secure latching lid ensures the contents remain intact and protected from spills or unauthorized access, and the lock spot provides an extra layer of security for sensitive documents. Made from durable plastic, the file box is water-resistant, offering some protection against moisture, which is beneficial for safeguarding important paperwork.

However, the file box's capacity of 9.5 quarts and weight recommendation of 10 pounds may limit its use for those needing to store and transport a larger volume of documents. Additionally, while the water resistance is a plus, it is not entirely waterproof, so it may not be suitable for extreme conditions. This product is best suited for professionals such as bankers, financial advisors, or anyone who needs a reliable and portable solution for document organization and security.

The IRIS USA WeatherPro File Organizer is a solid choice if you need a portable file box that safely stores letter and legal-size documents. Its 32-quart capacity and dimensions (about 18"L x 14.5"W x 11"H) offer enough space for a good amount of paperwork or personal items. Made with heavy-duty, BPA-free plastic and a durable lid with strong latching buckles, it feels sturdy and designed to last. One of its standout features is the weather-resistant seal that blocks moisture and dust, making it a great pick if you want to protect important files from spills or damp environments. The clear plastic body helps you quickly see what's inside without opening the box.

It stacks well thanks to grooves on the lid and base, which helps save space whether in an office, vehicle, or home. However, it doesn’t have multiple compartments, so organizing smaller items inside might require additional folders or dividers. While the box is designed to be portable, it weighs about 3.15 pounds per unit, so carrying multiple boxes could get a bit cumbersome. It also lacks a built-in lock, so for sensitive documents, you might want extra security measures. With a 35-pound max load, it’s suitable for typical document storage but not for heavier items.

This set of four boxes is practical for bankers, students, or anyone needing weather-resistant, stackable file storage that keeps contents dry and dust-free, though it may need some tweaks if you require advanced organization or security.

The IRIS USA File Box comes in a set of four, each designed to accommodate both letter and legal size files. Its size of 18.13 inches in length, 14.13 inches in width, and 10.75 inches in height, along with its 35-quart capacity, makes it a spacious option for document storage. The hanging file ledge is a useful feature for organizing documents efficiently. Made from durable, BPA-free plastic, this file box is designed to be sturdy and long-lasting. The pearl color and non-see-through design enhance privacy, which is ideal for professionals like bankers who need secure document storage.

Additionally, the latching lid ensures that the contents remain secure. Portability is a key feature, with the boxes being lightweight at 2.11 pounds each and stackable, which helps in saving space and easy transportation. However, while the file box is water-resistant, it may not provide complete protection in severe weather conditions. For organization, the file boxes can fit both legal and letter-sized documents, making them versatile for different uses such as in offices, classrooms, or even at home.

One downside could be that it only comes with a single compartment, which might not be sufficient for users needing divided spaces within the same box. The stackable and nestable design is a plus for those needing to store multiple units compactly. This file box is particularly beneficial for users seeking a balance between capacity, durability, and secure storage.