Troffer Fixture Retrofit Kit, Lumens 3,400 lm, Lumens Range 2,000 to 3,999 lm, Light Technology LED, 120/277V AC, Lighting Certification Unrated, Dimmable Yes, Emergency Battery Backup No, For Bulb Type Integrated LED, Overall Height 3 1/8 in, Overall Length 24 in, Overall Width 24 in, Color Rendering Index 83, Color Temperature 4000K, Dimming Method 0-10V, Dimming Range 100 Percent to 1 Percent, Kit Contents 2 Ends, 2 Rails, 2 Reflectors, Frame, Lens, LED Replacement For T8 U-Bend