This adapter is used on the wall end of a central vacuum hose. It conducts electricity from a super-valve type inlet, into the hose.
This Plug requires two Barrel Connections. Most plugs require one spade and one barrel, this does not use a spade.
For 06-1146, 06-1147 gray, BI-4516 and BI-4337-1 OEM #06-5700-97