12U is a typical wall mounted data cabinet site. This size of network cabinet is typically used to house IT network switches and routers but can also be used to protect computer PCs and servers. This type of cabinet is available as a rack flat. 12U is a typical wall mounted data cabinet site. This size of network cabinet is typically used to house IT network switches and routers but can also be used to protect computer PCs and servers. This type of cabinet is available as a rack flat pack in wall mounted, floor standing and accoustic cabinet formats.Shelves are ideal for devices that cannot be installed into floor standing cabinets. As part of our cabinet accessories range we provide a wide selection of “rack shelving”: https://. Patch panels (24 and 48 port), patch panel cable and specialist cables are available from Server Room Environments including smart hands to provide on-site network cable installation and routing. Cables rings and cable management bars are also available from our rack accessories range.Other floor standing server rackaccessories include: 1. Blanking panels:1-6U to help improve cooling system efficiency and airflow within a server rack and to help separate cold and hot airflow. 2. Door security: with RFIDdoor handles managed by an access control system that can also manage door entry and exit in the server room or data centre. 3. This is not an exhaustive list but provides some general check points when preparing to install a 12U floor standing or wall mounted data cabinet. 1. Rack Height:calculate the total height of the equipment to be installed in the cabinet. The total height should be calculated in U height. If shelves are needed for certain devices assume 1U high for.