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
LUXRITE 32-Watt Equiv. 4 ft. Linear Tube T8 LED Light Bulb Ballast and Ballast Bypass Compatible 13W 6500K Daylight (4-Pack) LR34194-4PK - The Home Depot