Solid, one piece 4" square box swivel hangers with a gasketed cover for 1/2" or 3/4" pipes are used to hang light fixtures, security cameras, speakers and other electrical or electronic devices from standard 4” square junction boxes. They are gasketed for air plenum spaces and require no extra mounting boxes and hangers, and allow a 20° swing from vertical. They are great for industrial settings where conduits are bumped or jostled occasionally.