OZ-Gedney Type CHT Space-Maker Conduit Hub, Size: 4 IN, Malleable Iron, Finish: Zinc Plated, Connection: 4-8 Female Tapered NPSM, Dimensions: 5-1/2 IN Diameter X 2-3/4 IN Length, Box Wall Thickness: 1/8 IN, Third Party Certification: UL File Number E-11853 For Use In Wet Locations, CSA 009795, Applicable Third Party Standards: UL 514B, CSA C22.2 No.18, Federal Specification W-F-408E, NEMA : FB-1, NEMA : 4, NEMA : 12, Hazardous Locations: Class I, Division 2/Class III, Division 1, 2 Per NEC 501-4(b), 501.10(b)(4), 502-4(a)(2), 503-3(a), For Rigid Conduit And IMC