21 in. 13W Replacement Cool White (4000K) G5 Base (T5 Replacement) LED
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
Bulbrite F13T5WW 13-Watt Linear Fluorescent T5 Bulb Miniature, 3000-Kelvin, Mini Bi-Pin Base, 21-Inch, Warm White - Fluorescent Tubes - Amazon.com
Feit Electric 13-Watt 21 in. T5 G5 Linear Fluorescent Tube Light Bulb, Cool White 4100K (1-Bulb) F13T5/CW/RP - The Home Depot