Appleton Mercmaster Jr. Fixture Unit Without Guard, Lamp Type: 150 WTT S55 Medium High Pressure sodium, Lamp Wattage: 150 WTT, Voltage Rating: 120 V, Number Of Lamps: 1, Material: Copperfree (4/10 Of 1 PCT Maximum) Aluminum Mounting Hood, Ballast Bodies, Fixture Wattage: 170 WTT, Amperage Rating: 1.7 AMP Starting, 1.5 AMP Operating At 120 V, Housing Finish: Epoxy Powder Coat, Housing Material: Copperfree (4/10 Of 1 PCT Maximum) Aluminum, Ambient Temperature Range: 25 DEG C, Temperature Range: 281 - 300 DEG C, Lens Material: Threaded Heat-Resistant Prismatic Glass Globe, Ballast Type: High Power Factor (HPF), Ballast Quantity: 1, Frequency: 60 HZ, Standard: Class I, Division 2, Groups A, B, C, D, UL Listed: E10444, 1598, 1598A, 844, Inexpensive Hid Integrally Ballasted Fixture For Use In Hazardous Locations - Inexpensive To Buy And Inexpensive To Operate, Enclosed And Gasketed Hid Lighting Fixtures For Use In Tunnels, Walkways, Bridges, Storage Facilities, Processing Plants,Parking Lots, Foundries, Manufacturing Plants, Power Plants And Other Locations Where Moisture, Dirt, Dust Or Corrosive Atmospheres Are Encountered