Abstract: An electrical box connector conduit is fixedly mounted between adjacent electrical boxes through aligned box bores. The conduit structure includes a central conduit member having first and second abutment flanges mounted fixedly to the first and second ends of the conduit member. The conduit member is internally threaded to threadedly receive first and second externally threaded tubes. The first and second tubes include first and second tube flanges, with respective side walls of the respective boxes captured between a respective tube flange and abutment flange to direct electrical cable through the conduit structure between the electrical boxes.

Abstract: A first resilient wall having an opening to the outer diameter of the wall for a line through the first wall is squeezed by a second wall having an opening for a line through the second wall, and a third wall and insert. The insert is nested in the third wall. The third wall and insert form between them an opening for passing a line between them, the opening in the third wall being large enough to pass through a termination of the line that is larger in diameter than the line. Material of the squeezed first wall is displaced against the line and against an inner wall of a hole in which the plug is mounted.