Currently I'm using this to hold documents pertaining to my grandson's education and the like so it works perfectly. For legal-sized documents I suggest purchasing the file storage for that purpose otherwise you'll feel the files are stuffed.
I use this product to file paid bill receipts on a monthly basis. It saves time to find a receipt when needed. It has a choice of alphabetical filing or pre-labeled filing.
This is a tight fit for my files. I wish it were about an inch wider and taller. The documents drop into the crevices but with a slightly different size it could be a great mobile storage unit.