Feit Electric Color select 32-Watt EQ 12-in Cool White G24q-2 Pin Base Circline Type A LED Tube Light Bulb in the LED Tube Light Bulbs department at Lowes.com
Feit Electric 22-Watt 8 in. T9 G10q Linear Circline Fluorescent Tube Light Bulb, Warm White 3000K (12-pack) FC8T9/WW/12 - The Home Depot
T5 22W Circular Bulb 6400K Daylight, T5 Type 7.25'' Circle Fluorescent Lamp fc8t5/865 G10q - - Amazon.com
T9 Circular Fluorescent Tube 22W - 216 mm in diameter - ElectroMaterial
9 in. 16W (30W Replacement) Selectable White G10Q (T9 Replacement) Dir
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FC22T5/865 Outside PINS 22W 22 Watt 7.25 inch Diameter Circular Fluorescent lamp/Bulb for Magnifying Lamps - - Amazon.com
Philips 32-Watt 12 in. Linear T9 Circline Fluorescent Tube Light Bulb Bright White (3000K) 391227 - The Home Depot
T5 22W Circular Bulb 6400K Daylight, T5 Type 7.25'' Circle Fluorescent Lamp fc8t5/865 G10q - - Amazon.com
Fluorescent lamp - Wikipedia
Feit Electric 16-Watt 9 in. T9 G10q Type A Plug and Play Linear Circline LED Tube Light Bulb, Tunable White FC9/3CCT/LED - The Home Depot
Project 'Green' House #1: LED replacement lighting for circular fluorescent tubes // DavidJB.com // Python, Technology, Web, Linux, and more, by David Beitey
Fluorescent lamp - Wikipedia
Norman Lamps FCT5-32W-D Daylight 6400K - Watts: 32W, Type: T5 Circular Fluorescent, Color: Fluorescent Lamps: Amazon.com: Tools & Home Improvement
T5 22W Circular Bulb 6400K Daylight T5 Type 7.25'' Circle Fluorescent Lamp fc... | eBay
Circular Lamp Set with Electronic Ballast - Firefly Electric and Lighting Corporation
Philips 22-Watt 8 in. Linear T9 Fluorescent Tube Light Bulb Cool White (4100K) Circline 391169 - The Home Depot