Project 'Green' House #1: LED replacement lighting for circular fluorescent tubes // DavidJB.com // Python, Technology, Web, Linux, and more, by David Beitey
BULBMASTER FC8T9/CW 22 Watt 8 Inch Round T9 Fluorescent Circular Light Bulb, Cool White 4100K, 1120 Lumens G10Q 4-Pin Base 22W Circline Ceiling Lights : Amazon.co.uk: Lighting
Fluorescent Tubes Buying Guide - Types, Sizes and Uses
BULBMASTER FC8T9/CW 22 Watt 8 Inch Round T9 Fluorescent Circular Light Bulb, Cool White 4100K, 1120 Lumens G10Q 4-Pin Base 22W Circline Ceiling Lights : Amazon.co.uk: Lighting
8" 22W Warm White Circular Fluorescent Lamp - Fluorescent Tubes