2x Osram 13W T5 Fluorescent Tube Cool White 640 4000k 4050300008974 21 Inch 51cm 4050300008974 | eBay
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