EMT Conduit Coupling; Type Set Screw; Trade Size 4 Inch; Diameter 5.75 Inch; Length 3.38 Inch; Material Zinc Electroplated Malleable Iron; Constructional Feature Concrete-Tight; Standard Package 6; Approval UL 514B; Used On EMT Conduit; ROHS Compatible; Applicable Standard Federal Specification WF-408E, NEMA FB-1