Bushed nipple, material: Malleable iron, finish: zinc plated, Length: 1.63 in, trade size: 3 1/2 in, outside diameter: 4.56 in, flexibility: rigid and IMC, connection: male threaded, thread Length: 1 1/4 in, UL standard 514B, CSA standard C22.2 no.18.3, NEMA FB 1
