You will receive both the 48-port patch panel and rack mount tray with your purchase.  This item is used, but in good condition.  There are labels on the patch panel from previous use.  The panel is 19" wide.  The rack mount tray is also 19" wide when you include the mounting tabs.  The main box is 17-1/2" wide (see photo 6) and 11 inches deep (see photo 7).  There are wire punch outs on the metal box on the back and both sides.  Some have been removed.  The panel is 2 RU in height.