The Fusion Jack Canopy 4 inch Round Flush LED by LBL Lighting mounts to standard 4" electrical box. 12V, 60w electronic transformer (included) neatly fits into junction box. This is standard with MPT mount elements. Female Fusion Jack port installed. Order elements as FSJ. The Fusion Jack Canopy 4 inch Round Flush LED is a finely crafted solution for your lighting needs.