Project 'Green' House #1: LED replacement lighting for circular fluorescent tubes // DavidJB.com // Python, Technology, Web, Linux, and more, by David Beitey
Lighting Supply Blog: A Little Light Reading - LIGHTING SUPPLY
Feit Electric 30-Watt 9 in. T9 G10q Linear Circline Fluorescent Tube Light Bulb, Cool White 4100K (1-Bulb) FC30/CW - The Home Depot
913818-3 GE Lighting 22 Watts Circular Fluorescent Lamp, T9, 4-Pin (G10q), 1100 Lumens, 4100K Bulb Color Temp. | Imperial Supplies
Project 'Green' House #1: LED replacement lighting for circular fluorescent tubes // DavidJB.com // Python, Technology, Web, Linux, and more, by David Beitey
Feit Electric 15-Watt 8 in. T9 G10q Type A Plug and Play Linear Circline LED Tube Light Bulb, Tunable White FC8/3CCT/LED - The Home Depot
Lights of America 00220 - LOA 2622B (FC8T9EX-L/RS) Circular T9 Fluorescent Tube Light Bulb - Walmart.com