Sealing Hubs - Vertical Trade Size 3/4 in 1 in Ends - Hazardous Fittings 3/4 in FNPT x 1 in MNPT Overall Length 2 1/4 in Iron Hazardous Location Rating Class I Division 1 and 2 Groups A B C D Class II Division 1 and 2 Groups E F G Class III Thread Gender Male to Female Used to Seal Vertical Conduit Risers At Switch Gear and Motor Control Centers Silver Compatible Conduit Trade Size 1 in 3/4 in Compatible Conduit Type IMC RMC Conduit Orientation Vertical