Explosionproof Conduit Union, Type Long, Connection Type Female to Male, Trade Size 1 Inch, Diameter 1.75 Inch, Maximum Length 4.75 Inch, Material Zinc Electroplated Steel, Enclosure Class I Div 1 and 2 Group C D, Class II Div 1 and 2 Group E F G, Class III, Approval UL 886, Application Joining Conduit and Connecting Conduit to Enclosures, Facilitates Modification, Permit Removal of Enclosures Expansion and Contraction of Conduit