Feit Electric 30 W T9 9 in. D X 9 in. L Circline Fluorescent Bulb Warm White Circular 3000 K 1 pk - Ace Hardware
Lite Source 12 Watt 120 Volt Circular Tube Compact Fluorescent Bulb - - Amazon.com
Feit Electric 32-Watt Cool White T9 Circular Fluorescent 4-Pin Light Bulb | Bed Bath & Beyond
CURRENT Circular Fluorescent Bulb: T9 - 2C827|FC8T9/KB - Grainger
Replace 32W Circular Fluorescent Tubes With 20W LED
Philips 40-Watt 16 in. Linear Circline T9 Fluorescent Tube Light Bulb Cool White (4100K) (1-Bulb) 391185 - The Home Depot
GE Garage and Basement Circline Cool White Bulbs, 8.25 Inch Diameter, FC8 T9 Light Bulbs (1 Pack) - Kitchen Light Bulbs - Amazon.com
T9 Led Circline Light Bulb 8 Inch 12inch 85-265v Fc8t9 Replacement For 22w Circle Fluorescent Lamp Fixture G10q Led Circular - Led Bulbs & Tubes - AliExpress
Westinghouse 0602300 32 Watt T9 Circular Fluorescent Light Bulb 3000K Warm White 4-Pin Base
Philips Lighting 3003551 1.13 x 8 in. 22W T9 Circline Fluorescent Bulb 6200K Daylight Circular - Walmart.com
Project 'Green' House #1: LED replacement lighting for circular fluorescent tubes // DavidJB.com // Python, Technology, Web, Linux, and more, by David Beitey