What I'M saying is in the basement they panned off two bays for the return then over the panning there is a partion wall that is just studded out and drywall with a register grill, the bottom plate is cut out for the return air to flow down to the panned area I would like to put a recept in the wall chase that is really a return duct. The wiring will be running thru the partion wall and stopping in the wall chase return with a recept using m/c cable and a metal box cancealed in the wall.