4 Easy Ways to Change a Circular Fluorescent Light Bulb - wikiHow
Replace 32W Circular Fluorescent Tubes With 20W LED
NOMA 22W 8-in Circline Fluorescent Tube | Canadian Tire
Feit Electric 30-Watt 9 in. T9 G10q Linear Circline Fluorescent Tube Light Bulb, Cool White 4100K (1-Bulb) FC30/CW - 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
Philips 32W 12" T9 4 Pin Circline Soft White Fluorescent Light Bulb | Home Hardware