T9 LED Circline Light Bulb 8 Inch 12Inch 85-265V FC8T9 Replacement for 22W Circle Fluorescent Lamp Fixture G10Q LED Circular - AliExpress
Project 'Green' House #1: LED replacement lighting for circular fluorescent tubes // DavidJB.com // Python, Technology, Web, Linux, and more, by David Beitey
Philips 32-Watt 12 in. Linear T9 Fluorescent Tube Light Bulb Cool White (4100K) Circline (1-Pack) 391177 - The Home Depot
Feit 32 W T9 12 in. D Circline Fluorescent Bulb Cool White Circular 4100 K 1 pk - Ace Hardware
Plug & Play 12 Inch T9 Circline LED Bulb Ballast Required!
Sylvania 32-Watt Equivalent 12 in. Circline T9 Round Tube LED Light Bulb 41208 - The Home Depot
4 Easy Ways to Change a Circular Fluorescent Light Bulb - wikiHow
AMATRON ETL Listed 16" T9 24W LED Circline Bulb LED Circular Tube 5000K Daylight Frosted Lens with Non-Dimmable External Power Driver to Replace 16 inch 40W Fluorescent Circline - Led Household Light
Lighting Supply Blog: A Little Light Reading - LIGHTING SUPPLY
Technical Precision T4 Type 12 Watts Fluorescent Round Tube Bulb Replacement for VTLAMP10 Desk Lamps 5.4 Inch OD Circular Tube Light G10q-4 4-Pin Square Base - 6400K Light - 1 Pack - Amazon.com