Light Efficient Design LED-6114-A 120/277 Volt 4-Foot T8 Tube 18-Watt 228-LEDs Acrylic 3000K, Soft White Soft White SW (3400K) Compare to 17-Watt standard fluorescent Up to 50,000 hour lamp life Minimal heat output ETL certified, Lighting Facts (LED-6110/2/4/6)