Project 'Green' House #1: LED replacement lighting for circular fluorescent tubes // DavidJB.com // Python, Technology, Web, Linux, and more, by David Beitey
Circular 60w Fluorescent Tube Warm White | Crompton (CIR60SPWW)
Replace 32W Circular Fluorescent Tubes With 20W LED
TL-E Super 80 Circular fluorescent 928027486574 | Philips