EXTRALINK 4U rack cabinet 600 x 450 grey The Extralink rack cabinet is designed for wall mounting in offices, network server rooms and CCTV control rooms. External walls are made of cold-rolled steel sheet, while the front door has a tempered glass pane with the possibility of opening to the left or right side. Clearly marked cabinet height The vertical rails have a corresponding height designation which is 4U (unit). The total height of the cabinet is 28 cm. Easy removal of side walls Snap fasteners on the side walls allow for their disassembly. Locks and keys are included. Ceiling adapted to the installation of fans On the ceiling of the cabinet there are 2 places to install fans for better cooling of the devices and additional conduit for pulling out cables.