The Keysight 34190A (5063-9240) rackmount kit is designed for use with only one instrument, mounted on either the left or the right side of the rack. The kit includes one rack flange and one half-rack width filler panel, 4 screws to attach the instrument, 4 rack screws with nuts and installation instructions in English.
The Keysight 34190A is compatible with the Keysight 34460A, 34461A, 34401A, 34410A, 34411A, and 34420A DMMs, the Keysight 34970A/34972A Data Acquisition/Switch Units, the Keysight 531xxA and 53200 Series frequency counters, the Keysight 33120A, 33220/250A and 33521A/33522A, and 33500B series function generators, most E3600 power supplies and other 2-slot, half rack sized Keysight products.