Awesome little racks. Completely enclosed with the metal mesh, except ofcourse the front where the files get placed in or taken out of the rack, to keep all of your files and anything you put on the bottom shelf from falling out. The bottom shelf is a nice little bonus as well for you to put your keys or ear buds or whatever you dont want to carry in your pocket for the day. I do wish it had securement holes in the bottom though. That way it helps keep your rack straight during its time of use and also that little piece of mind that it ain't going nowhere, like falling off the wall, would be nice. Not to worry though. A drill solved that problem for me. The hooks that come with it are kinda pointless, IMO, without dedicated slots or holes to hold them in place. They kinda just slide around on the lip of the bottom shelf. Overall though, it's a good product and I can see getting plenty of good use out of this for a long time to come.