Al Union Thread Gender Male to Female Trade Size 3/4 in Ends - Hazardous Fittings 3/4 in FNPT x 3/4 in MNPT Overall Length 2 1/8 in Outside Diameter 1.5 in Overall Width 1 7/16 in Weight 0.12 lb Aluminum Finish Unfinished Hazardous Location Rating Class I Divisions 1 and 2 Groups A B C D Class II Divisions 1 and 2 Groups E F G Class III Divisions 1 and 2 UNF For Use With IMC Rigid Conduit Threaded Conduit Conduit Fitting Type Union Connection Orientation Straight