Sealing Fitting - Vertical and Horizontal, Trade Size 1 in, Ends - Hazardous Fittings 1 in FNPT x 1 in FNPT, Overall Length 4 5/16 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, Prevent Passage of Gases, Vapors or Flames From One Portion of Conduit Systems to Another, Silver, Compatible Conduit Trade Size 1 in, Compatible Conduit Type IMC, RMC, Conduit Orientation Horizontal, Vertical