Containers are fine but the latch hinges have a tendency to slide out of their mountings. As long as you're not depending on the lids to stay put in other words kept in a stationary place these work just fine. But if you're moving them via vehicle I'd recommend that you put tape around the whole box for the trip to make sure they stay shut.
Bought this little storage unit on sale and worth it. I was able to fit so much with the handing folders and really organize myself. The box is sturdy as well.
This True Red portable hanging file box is a perfect fit for my home office. All my important papers are now stored neatly in it instead of in messy piles on the desktop.