Philips 32-Watt 12 in. T9 Circline Linear Fluorescent Tube Light Bulb, Daylight Deluxe (6500K) (1-Pack) 262600 - The Home Depot
Feit Electric 20-Watt 12 in. T9 G10q Type A Plug and Play Linear Circline LED Tube Light Bulb, Cool White 4100K (4-Pack) FC12/840/LED/4 - The Home Depot
Feit Electric Color select 32-Watt EQ Cool White G24Q-2 Pin Base LED Light Bulb in the Tube Light Bulbs department at Lowes.com
12 Inch 16 Watt FC12T9 LED Circline Bulb Ballast Bypass – Green Electrical Supply
Feit Electric FC12/865/LED 12 in. (32W Replacement) Daylight Deluxe G10Q (T9 Replacement) Direct Replacement (Type A) Non-Dimmable Circline LED Light | BuyRite Electric
NYLL - 12 Inch/ 12" Plug & Play T9 Circline LED Lamp - Warm White (2700K) Circular Bulb Directly Relamp 32 Watt Fluorescent Bulb FC12T9/WW, FCL32 (without rewiring or modification) - Ballast Required! - Amazon.com