Feit Electric 15-Watt 8 in. T9 G10q Type A Plug and Play Linear Circline LED Tube Light Bulb, Selectable White FC8/3CCT/LED - The Home Depot
Project 'Green' House #1: LED replacement lighting for circular fluorescent tubes // DavidJB.com // Python, Technology, Web, Linux, and more, by David Beitey
AMATRON ETL Listed 16" T9 24W LED Circline Bulb LED Circular Tube 5000K Daylight Frosted Lens with Non-Dimmable External Power Driver to Replace 16 inch 40W Fluorescent Circline - Led Household Light
GEL33774 Circular GE Fluorescent Light Bulbs | OnTimeSupplies.com
Philips 32-Watt 12 in. Linear T9 Fluorescent Tube Light Bulb Cool White (4100K) Circline (1-Pack) 391177 - The Home Depot