Explosionproof Incandescent Light Fixture, Lamp Type A21, Lamp Wattage 60 to 100 W, Number of Hubs 4, Number of Plugs 3, Hub Size 1 Inch, Housing Material Copper Free Aluminum, Housing Finish Epoxy Clad Double Coated, Electrostatically Applied Epoxy Powder Coated, Globe Material Heat/Impact Resistant Glass, Guard Material Copper Free Aluminum, Guard Finish Epoxy Clad Double Coated, Electrostatically Applied Epoxy Powder Coated, Reflector Type Natural Finished Aluminum, Mounting Ceiling, Enclosure Class I Div 1 and 2 Group C D, Class II Div 1 and 2 Group E F G, Class III, Approval UL E10444/1598/844, CSA C22.2, Application Chemical and Petrochemical Plant, Vapor, Dust, Moisture, Corrosive Atmosphere, Wet Location, Used On Threaded Metal Conduit