Appleton FD4L, 4-Gang, Malleable Iron, Deep, Cast Device Box, 1pc. Appleton GIB-250LS-4AC, 2-1/2″, Insulated, Threadless, Grounding Bushing, 1pc. Appleton GIB-500L-4AC, 5″, Insulated, Threaded, Rigid Grounding Bushing, 1pc.