2 x 21" 13w T5 Fluorescent Tube Cool White [4000k] (Osram 4050300008974) - Amazon.com
F13T5WW – T5 21 Inch Under Counter Fluorescent Bulbs Warm White 3000K 13-Watt F13T5/WW 21” WW Long Life Replacement Tubes for Under Cabinet Lights – Pack of 6 Bulbs - Amazon.com
TBE LIGHTING 8w / 12 inch Soft White 3500K Tubes - F8T5/D Fluorescent Tube Lamps 288mm / 12''- CFL Bulbs - G5 2-Pin Base Fittings - T5 High Efficiency Lamps (2-Pack) - Amazon.com
6 Pack) F13T5/CW - T5 Fluorescent 4100K Cool White - 21" Linear - 13 Watt T5 - Under The Counter Light Bulbs - Amazon.com
4 Pack of 5W/12 T5 LED Tubes Replace 8W Fluorescent Tube for Undercabinet Lights Directly to get Over 50% Energy Saving and Upgrade to LED System. - Amazon.com
TBE LIGHTING 8w / 12 inch Daylight White 6500K Tubes - F8T5/D Fluorescent Tube Lamps 288mm / 12''- CFL Bulbs - G5 2-Pin Base Fittings - T5 High Efficiency Lamps (2-Pack) - Amazon.com
Amazon.com: 13 Watt 21" T5 Fluorescent Tube Cool White F13T5/4100K - (4 Lamps) Bulk No Sleeves : Tools & Home Improvement
6 Pack) F13T5/WW - T5 Fluorescent 3000K Warm White - 21" Linear - 13 Watt T5 - Under The Counter Light Bulbs - Amazon.com