Brand ACUITY LITHONIA Mfr. Part Number TH 400MP TB SCWA HA QRS HSG Height 26 in. Mounting Pendant Splice Box Housing Finish White Polyester Powder Paint Package Quantity 1 Item HID Ballast Housing Series TH Lamp Included No Shipping Weight 21.35 lb. Lamp Type MH Voltage 120 to 277 Lamp Watts 400 W Width 22-3/8 in. General Ambient Temp. Range -22 Degrees to 131 Degrees F For Max. Bulb Wattage 400 W Ballast Start Type Pulse Start For Min. Bulb Voltage 120 V Fixture Wattage 400 W Max. Ambient Temp. 131 Degrees F For Bulb Base Type Mogul Min. Ambient Temp. -22 Degrees F For Bulb Type Metal Halide Socket Type Protected For Max. Bulb Voltage 277 V Standards NOM Certified Product Description High- and Low-Bay HID Fixtures Fixtures are sold as ballast housings or complete units. Ballast housings are die-cast aluminum with baked, white polyester, powder-coated finish For high mounting heights that require high efficiencies, horizontal illumination and premium contrast control. Optimum performance for high ambient temperatures and harsh environments. Ideal for heavy manufacturing areas, warehouses, retail aisles and gymnasiums. Construction Housing: Rugged, heavy-duty, die-cast aluminum with white polyester powder finish. Electrical components horizontally opposed and heat-sinked to ballast housing. Optics Self-cleaning, ventilated design carries optical contaminants out through top of reflector. High-efficiency, high-performance, heat-resistant borosilicate glass reflector mounted within heavy-gauge rigid wire form rings and rods fitted to top and bottom of reflector. Yields high vertical footcandles with low brightness and excellent contrast control. Electrical Ballast: All ballasts are 100% factory tested. HPS: Constant wattage autotransformer. MH: 175-450W fixtures shipped within the U.S. require super CWA pulse start ballasts which are 88% efficient and EISA-legislation compliant (must specify SCWA option). CSA, NOM or INTL options required for probe start shipments outside the U.S. 1000W is constant wattage autotransformer. Socket: Glazed porcelain, vertically oriented, mogul base socket with copper alloy, nickel-plated screw shell and center contact. Installation Cast-aluminum pendant splice box threaded for 3/4" conduit (standard). Other mounting options available. Light Source HID - High Pressure Sodium, HID - Metal Halide, Not Applicable Product Type High Bay Environmental Listing Damp Location Regulatory Listing CSA, NOM, UL Fixture Wattage 400 Voltage Rating 277