Sealing Fitting - Vertical, Trade Size 3/4 in, Ends - Hazardous Fittings 3/4 in FNPT x 3/4 in FNPT, Overall Length 3 11/16 in, Aluminum, 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 Female to Female, Used In Hazardous Locations to Minimize the Passage of Gases and Vapors and Prevent the Passage of Flames from One Portion of the Electrical System to Another Through the Conduit, Gray