Recessed Troffer, Nominal Size - Fixtures 2 ft. x 4 ft., Light Technology LED, Lighting Certification DesignLights Consortium (DLC) Premium, Lamp Type - Fixtures Integrated LED, Dimmable Yes, 4000 Lumens, Color Temp. 4000K, Color Rendering Index 80.0, Max. Fixture Wattage 32.0, Lumens Per Watt 125.0, Fixture Voltage 120 to 277, Fixture Rated Life 50,000 hr., Fixture Length 48 In., Fixture Width 24 In., Fixture Height 4 In., LED Replacement For 3 Lamp T8, Emergency Back Up Battery No