O-Z/Gedney RB-355 4 to 2-1/2 Inch Malleable Iron NPT Reducing Bushing

OZ-Gedney Type RB Reducing Bushing, Size: 4 X 2-1/2 IN, Malleable Iron, Flush Mounting, Finish: Zinc Electroplated, Connection: Tapered NPT Thread, 1-1/2 IN Body Length, Third Party Certification: UL File Number E-34997, Class I, Division 1, 2, Groups B, C, D, Class I, Zone 1, 2, Groups IIA, IIB + H2, Class II, Division 1, 2, Groups E, F, G, Class III, CSA 009795, Applicable Third Party Standards: UL 886, CSA C22.2 Number 30, NEC Articles 500-503 And 505, For Threaded Rigid Conduit And IMC