The Keysight Technologies rackmount adapter kit comes with filler panel which has rackmount flange kit of 88.1 mm or 177.0 mm height, one flange, two flanges, one quarter module flange and two flanges and front handles.
Rackmount and rackmount flange kit comes in 2 or 4 unit package Handles and rack flanges are available for all System II cabinets