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
4 Pack T5 21 Inch LED Replacement Bulb F13T5 LED 9 Watts 920 Lumens White F13 T5 13 Watt Bulb - Bluex Bulbs
12" 12 Volt LED Tube Light Replacement from M4
GE F14W/T5/830/ECO 14 Watt 21 5/8 Inch T5 Fluorescent 3000K
Plug & play 21 Inch T8 LED replaces F20T12/CW/21 w/o retrofit
NYLL - 21 Inch/ 21" Plug & Play LED Tube - Cool White (4200K) T8 LED Lamp Directly Relamp 20W Fluorescent Bulb F20T12/21”, F20T12/CW/21” (Without rewiring or Modification) - Ballast Required! - Amazon.com
7 Watt T5 LED Ballast Bypass Mini Bi-Pin 700 Lumens 21 Inches Long 4000K Cool White - Replaces F13T5/CW
F13T5D – T5 21 Inch Under Counter Fluorescent Bulbs Bright White Daylight 6500K 13-Watt F13T5/D 21” D Long Life Replacement Tubes for Under Cabinet Lights – Pack of 6 Bulbs - Amazon.com