Philips 15-Watt 18 in. Linear T8 Fluorescent Tube Light Bulb Cool White (4100K) 392076 - The Home Depot
Lightwise LWL7W40-F13T5 21" Direct Replacement Led Tube, 7-Watt, White, 4000K, Retrofit 13W T5 Fluorescent Tube of your Uncder-Cabinet Lights 50% Energy Saving, Replace Directly Set of 3 - - Amazon.com