Lumi Pro: A+B Ballast Compatible, 4' T8 Tube LED Light, 18 watts, 5000K, AC100-277V, 130lm/w, Chip: Epistar SMD2835, CRI>80, PF> 0.95, Lifetime: 50,000 Hrs, CLEAR Cover, 3 yr limited warranty, ETL Listed | Poli LED