2 ft x 4 ft, Lens Shape Flat, 4000K, 7,645 lm, 143 lm/W, LED, LED Replacement For 4 Lamp T8, Bulb Included Yes, For Bulb Type Integrated LED, Fixture Ballast Type No Ballast Required, Sensor Type No Sensor, Max. Fixture Wattage 53.2 W, Color Rendering Index 82, 120 to 277V, Lighting Certification DesignLights Consortium (DLC) 5.0 Premium, Dimmable Yes, Emergency Battery Backup No, Series 2GTL