We have used these boxes for many years for moving and storage. They are easy to put together and are super sturdy and strong. They hold a lot of weight and are easy to stack on top of each other. We have stacked as many as 5 boxes on top of each other without a problem and could probably stack them even higher if we wanted to. They are easy to label and organize. I love that they have a separate box top and the side handle holes making them easy to pick up and carry. We have used these boxes to store everything from delicate glassware to old files books and magazines.
These file storage boxes can be used to hold letter or legal size folders. I use them all the time. They make organizing large amounts of paperwork manageable. I would recommend them to anyone especially someone who has an overwhelming amount of paperwork to do and store.