2 ft x 2 ft, Lens Shape Flat, 4,000 K, 4,051 lm, 114 lm/W, LED, LED Replacement For U-Bend T8, Bulb Included Integrated LED, For Bulb Type Integrated LED, Fixture Ballast Type No Ballast Required, Sensor Type No Sensor, Max. Fixture Wattage 33 W, Color Rendering Index 80, 120/277V AC, Lighting Certification DesignLights Consortium (DLC) 5.0, Dimmable Yes, Emergency Battery Backup No, Series LJT