This is a 6 inch long universal mounting board. When snapped in two, lengthwise, it can be used to mount smaller PCBs to CGS91 rails on a standard Serge-style panel. It can also be used to mount 6 pots, LEDS, etc. at 1 inch spacing. Small matrix areas allow for "flying" panel components to be given a sturdy mounting place.
CGS120 Datasheet and Build Guide