Straight Union - Conduit to Conduit, Thread Gender Female to Female, Trade Size 3 in, Compatible Conduit Type Vertical or Horizontal Rigid Conduit, Compatible Conduit Trade Size 3 in, Ends - Hazardous Fittings 3 in FNPT x 3 in FNPT, Overall Length 3 3/8 in, Overall Height 3 3/8 in, Overall Width 3 3/8 in, Aluminum, Finish Powder Coated, 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, UNF, For Use With Conduit