These file boxes have ridges around the top-inside edge to hang standard and/or legal size hanging folders. I also use these for storage of sewing supplies X-mas ornaments and miscellaneous office supplies. I purchased two cartons of 4 boxes (total of 8 boxes). The lids snap on and the lidded boxes stack perfectly on top of each other. I stack 4 on top of each other…you could probably stack even higher however I would put lighter boxes on top. I recommend these transparent file boxes…especially if you don’t want to forget what they contain.
These were on sale for such a good price I just had to take a few to help me with my move from one home to the next where the file cabinets were not coming with me! So this was a really good solution for transporting. The only negative about this plastic file storage was that the top doesn’t fit as snuggly as you would like. Other than that they are great.