Project 'Green' House #1: LED replacement lighting for circular fluorescent tubes // DavidJB.com // Python, Technology, Web, Linux, and more, by David Beitey
Feit Electric 16-Watt 9 in. T9 G10q Type A Plug and Play Linear Circline LED Tube Light Bulb, Selectable White FC9/3CCT/LED - The Home Depot
BULBMASTER FC8T9/WW 22 Watts 8 Inch Round T9 Fluorescent Circular Light Bulb, Warm White 3000K, FC8T9 980 Lumens G10Q 4-Pin Base 22W Circline Ceiling Lights - Amazon.com
Philips 22-Watt 8 in. Linear T9 Fluorescent Tube Light Bulb Daylight Deluxe (6500K) Circline (12-Pack) 392357 - The Home Depot
GEL33774 Circular GE Fluorescent Light Bulbs | OnTimeSupplies.com