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
22 Watt Fluorescent T9 Circline 8 In. Light Bulb with 4 Pin (G10Q) Base, 6500K - FC8T9/
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.com
Philips 32-Watt 12 in. Linear T9 Circline Fluorescent Tube Light Bulb Bright White (3000K) (1-Pack) 391227 - The Home Depot
20w G10q T9 Replace Circular Fluorescent Light Bulb With Led - Led Bulbs & Tubes - AliExpress