VEVOR 20U Open Frame Server Rack, 15''-40'' Adjustable Depth, Free Standing or Wall Mount Network Server Rack, 4 Post AV Rack with Casters, Holds All Your Networking IT Equipment AV Gear Router ModemProduct Features Adjustable Depth 23 40'' adjustable depth is used for servers and network equipment, ensuring enough space for AV equipment, components, and cabling, while allowing you to access ports and equipment from multiple sides. Wide Application The server rack wall mount maximizes the use of available space, suitable for retail venues, classrooms, offices, and other places where space is limited.