1U 19 plain blank panel for filling in unused space or configuring to your own requirements. With a black powder coated steel finish. Includes set of mounting screws/washers/etc (see picture). Also available: 2U Rack Mount Blank Panel Cat HB-5422 1U Rack Mount Blank Panel - Vented Cat HB-5424 2U Rack Mount Blank Panel - Vented Cat HB-5426