Reducing Bushing - Haz Loc Thread Gender Female to Male Trade Size 3 in 4 in Compatible Conduit Type IMC Threaded RMC Compatible Conduit Trade Size 3 in 4 in Ends - Hazardous Fittings 3 in FNPT x 4 in MNPT Overall Length 1 7/16 in Weight 1.74 lb Iron Finish Chromate Coated Powder Coated Electroplated Hazardous Location Rating Class I Division 1 and 2 Groups B C D Class I Zone 1 and 2 Groups IIA IIB + H2 Class II Division 1 and 2 Groups E F G Class III RB