5 x 21" 13W T5 Fluorescent Tube Cool White [4000k] (Osram 4050300008974) - - Amazon.com
Lithonia Lighting UC 21E 120 SWR M6 1-Light 13W T5 Fluorescent Under Cabinet Light, 21-Inch, White - Under Counter Fixtures - Amazon.com
F13T5CW – T5 21 Inch Under Counter Fluorescent Bulbs Cool White 4100K 13-Watt F13T5/CW 21” CW Long Life Replacement Tubes for Under Cabinet Lights – Pack of 6 Bulbs - - Amazon.com
4 Lamps) F13T5CW 13 Watt T5 Fluorescent Tube 4100K Cool White (from Bulk No Sleeves) - - Amazon.com
Sunlite 8w F8T5 6500k Daylight Mini Bi-Pin 12 inch Fluorescent Tube Light - - Amazon.com
6 Pack) F13T5/CW - T5 Fluorescent 4100K Cool White - 21" Linear - 13 Watt T5 - Under The Counter Light Bulbs… - - Amazon.com
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
Norman Lamps F13T5-WW - Watts: 13W, Type: T5 Fluorescent Tube, Color - Fluorescent Tubes - Amazon.com