Retex 110 series instrument cases and mounting plates graphite grey retex 31110004 the retex 110 series 31110004 instrument case 250 x 90 x 200mm graphite grey has a modern design geared towards functionality both case or equipment mounting can be optimized while allowing the maximum use of interior space the structure of the box features two side aluminium extrusion profiles two steel lidbase covers and plastic brackets to which both panels are fixed the side profiles include rails