The Sylvania ULTRA LED RT8 unit is an 8 in. LED recessed downlight kit creating high performing white light which is optimized for new construction and retrofit applications. Installation is done quickly and easily in most standard 8 in. frames. Quality of Light The Sylvania ULTRA LED RT8 provides excellent color rendering (up to90 CRI) and a wide selection of color temperatures (3000K, 3500K, 4000K and d 5000K). LED���s have virtually no UV or infrared radiation to damage or fade furnishings, art or other objects.