On-Stage WSA7500, Sub-structure rack, For WS7500, 2 U Sub-structure rack suitable for the holes of the Producer Desks (Article Nr. #451300# and Article Nr. #451302#, not included), Made of powder-coated steel, Colour: Black, Includes rack cover (19"", 1 U), 4 screws for the mounting points, 2 self-tapping screws and 12 rack screws