LED Parabolic Retrofit Kit, Lumens 3,821 lm, Lumens Range 2,000 to 3,999 lm, Light Technology LED, 120/277V AC, Lighting Certification DesignLights Consortium (DLC), Dimmable Yes, Emergency Battery Backup No, For Bulb Type Integrated LED, Overall Height 4 in, Overall Length 24 in, Overall Width 22 1/2 in, Color Rendering Index 82, Color Temperature 4000K, Dimming Range 100 Percent to 1 Percent, LED Replacement For T8 U-Bend, Lens Type Diffuser Lens, Lumens per Watt 129 lm/W