Amazon.com: Durolux LWL7W40-F13T5 21" 7Watts White LED Tube with 4000K to Retrofit for 13W T5 Fluo. Tube of Your Under- Cabinet Lights to get Over 50% Energy Saving! Replace Directly! (3) :
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