1 ft x 4 ft, Lens Shape Center Basket, 3,500 K, 3,939 lm, 109.3 lm/W, LED, LED Replacement For T8, Bulb Included Yes, For Bulb Type Integrated LED, Fixture Ballast Type No Ballast Required, Sensor Type No Sensor, Max. Fixture Wattage 36 W, Color Rendering Index 80, 120 to 277V, Lighting Certification DesignLights Consortium (DLC) 4.4, Dimmable Yes, Emergency Battery Backup No, Series S1X4