RackSolution's Heavy Duty Sliding Rack Mount Shelf allows servers, desktops and tower computers to be rack mounted in 4 Post or 2 Post 19" racks. The equipment is secured to the shelf with front and rear braces. If additional security is required, there are 1" nylon straps and anti-slip mats available. Features include a space saving mounting tray, high quality ball-bearing slide rails, cable management, and universal rack compatibility.