EMT Conduit Coupling; Type Compression; Trade Size 3-1/2 Inch; Diameter 4-5/8 Inch; Length 5-1/8 Inch; Material Zinc Electroplated Steel; Constructional Feature Concrete-Tight; Standard Package 6; Approval UL 514B, UL (Canada and US); Used On EMT Conduit; ROHS Compatible; Applicable Standard Federal Specification A-A-50553, NEMA FB-1