All the Things! We give, and we give, and we give... and as long as you've got everything you need to build the most kick-ass rack on the block, we're happy to do it. Included in the box: 15U rack structure, two vented shelves (1x 1U x 15.12" and 1x 2U x 18"), leveling feet and 25 rack mounting screws (#10-32 x 3/4). We Got the Flow on LOCK Cucumber-y. Backside of the pillow-y. David Beckham on a Harley-y. Alright, alright, we're done with that - but what we're trying to say is that this rack is pretty gosh-darn cool and ready to keep your components cool, too. At 20.40" deep, this open-frame rack and its included, vented shelves are ready to take on your highest-end server, networking and AV components and keep them safe from overheating. (Have you Google image searched Beckham on a Harley yet? 10/10 would recommend.) This Rack HANGS. Or Stands. Or Rolls. You Pick. Let's hang out! (Sorry, we were talking about your rack. Well, this is awkward.) But seriously - this rack's designed for placement wherever's best for your setup. It comes with leveling feet, but it's designed to wall-mountable, too, if that makes more sense. Gotta' roll? Good news: We've got casters available to buy, too. In the end, it's your choice... and we support you no matter what. Go get 'em, tiger. How Much Space do You Really Need? Because you can have as much rack space as you'd like. Well, that is, if you'd like to stack our racks. And as long as you don't need more than 40U of space. Ok, ok, so there are some parameters. But long story short, Echogear skeleton racks are compatible with each other for stacking! 15U + 15U? Check. 15U + 20U? Check, check. 20U + 20U? Checkity, check, check.