Coupling, trade size: 2 in, outside diameter: 3 1/4 in, Length: 4.06 in, flexibility: rigid and IMC, material: Malleable iron, connection: compression, standard: UL 514B, UL File number E14814, CSA C22.2 no. 18.3, CSA 065178 certified, NEMA FB 1, for joining lengths of steel EMT to rigid metal conduit or IMC
