Conduit Outlet Body Overall Width 3 3/4 in Overall Height 2 7/8 in Overall Length 7 in Trade Size 1 in Compatible Conduit Trade Size 1 in Hub Size 1 in Compatible Cover GRK-1 GRK-100C GRK-1DC GRK-1M GRK-1SC GRK-1SC-A GRK-2 GRK-2M GRK-2SC GRK-2SC-A GRK-3 GRK-3M GRK-3SC GRK-3SC-A GRK-50 GRK-50A GRK-50C GRK-75 GRK-75A GRK-75C GRK-75U GRK-75UA Aluminum GR Compatible Conduit Type Threaded IMC Indoor/Outdoor Usage Indoor/Outdoor Back Type Round Body Capacity 18 cu in