Project 'Green' House #1: LED replacement lighting for circular fluorescent tubes // DavidJB.com // Python, Technology, Web, Linux, and more, by David Beitey
32 W Circular Tube (OptoMag Accessories) -Khush Enterprises
4 Easy Ways to Change a Circular Fluorescent Light Bulb - wikiHow
Circular Fluorescent Lamp 2c 100W - China Circular Flourescent Lamp and Compact Fluorescent Fitting
Osram FC Circular Fluorescent Lamp 840 2GX13 40 W Cool White : Amazon.co.uk: Lighting
Project 'Green' House #1: LED replacement lighting for circular fluorescent tubes // DavidJB.com // Python, Technology, Web, Linux, and more, by David Beitey
Crompton Fluorescent T9 32W 4-Pin 3000K FC32W/830 | Lightbulbs Direct