Couldn't find in the description or figure out from photos if these would hold legal sized papers. They don't - unless you want the paper sticking out. So if you have that you'll have to fold it or get something else.
These hold about two inches of paper in each basket. They are easy to put together and stackable (obviously), can get as many as you want and stack as high as you want. Not very sturdy. Live in Florida now, but in California where I used to live, this would be in danger of falling over in earthquake. If I had a cat or something and it rubbed up against them, it would knock it over. So be warned of that. Otherwise look like and functional.