Appleton UNILETS A-51 Series Incandescent Factory Sealed Luminaire Without Guard, Fixture Type: Ceiling Mount, Lamp Type: 150 - 300 WTT A23/PS25 Medium Incandescent, Lamp Wattage: 150 - 300 WTT, Number Of Lamps: 1, Material: Malleable Iron Mounting Hood With Aluminum Adapter, Fixture Wattage: 150 - 300 WTT, Length: 7.06 IN, Width: 7.06 IN, Height: 13-3/4 IN, Housing Finish: Epoxy-Clad And Powder Coat Fixture, Guard And Mounting Hood, Housing Material: Malleable Iron, Ambient Temperature Range: 40 DEG C, Temperature Range: 125 DEG C Supply Wire, Lens Material: Explosionproof And Heat And Impact-Resistant Glass Globe, Hub Size: 3/4 IN, Number Of Hubs: 4, Standard: Group A And B: Class I, Division 1 And 2, Groups A , B, C, D, Class II, Division 1 And 2, Groups E, F, G, Class III, Group C And D: Class I, Division 1 And 2, Groups C, D, Class II, Division 1 And 2, Groups E, F, G, Class III, UL 1598, UL 844, UL E10444, C22.2 No. 250, C22.2 No. 137, CSA 025428, Ideal For Use In ChemicalAnd Petrochemical Plants And In Other Heavy Process Areas Where Ignitable Vapors, Dust, Moisture And Corrosive Atmospheres May Be Present, Suitable For Use In Wet Locations, Use With Threaded Metal Conduit