Sealing Hubs - Vertical Trade Size 2 in 2 1/2 in Ends - Hazardous Fittings 2 in FNPT x 2-1/2 in MNPT Overall Length 3 13/16 in Iron Hazardous Location Rating Class I Division 1 and 2 Groups 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 2 1/2 in 2 in Compatible Conduit Type IMC RMC Conduit Orientation Vertical