Conduit Adapter; Type Male Threaded; Connection Type PVC Conduit to Threaded Fitting; Trade Size 3"; Material PVC; Standard Package 40 per Carton; Applicable Standard NEMA TC-3; Approval UL 651, UL 514, CSA; Overall Dimension 2.915" Inner Diameter x 2.88" Length; Thread Size 3"-8 TPI; Width Across Flat 4.04"; Application Residential, Industrial, Commercial Buildings