Appleton – GIB-200LS-4AC, 2″, 14 to 4 AWG, Threadless Grounding Bushing, 1 pc. Appleton GIB-250L-20AC, 2-1/2″, 14 to 2/0 AWG, Insulated Grounding Bushing, 1 pc. Appleton GRX125-A, 1-1/4″, Aluminum, X-Style, Explosionproof Outlet Box, 1 pc.