toggled 64-Watt 4 ft. Dimmable Linear LED Tube Light Bulb Retrofit Conversion Kit Replaces 8 ft. T8/T12 Bulb 8000 Lumens 4000K FC8TO4-D416-40321 - The Home Depot
Quasar Science Q30 T8 Dimmable 3000K 30W LED Lamp, 4': Amazon.com: Tools & Home Improvement