2 ft x 2 ft, Lens Shape Center Basket, 4000K, 4,100 lm, 122 lm/W, LED, LED Replacement For U-Bend T8, Bulb Included Yes, For Bulb Type Integrated LED, Fixture Ballast Type No Ballast Required, Sensor Type No Sensor, Max. Fixture Wattage 33.7 W, Color Rendering Index 82, 120 to 277V, Lighting Certification DesignLights Consortium (DLC) 5.0, Dimmable Yes, Emergency Battery Backup No, Series 2FSL2