Circline Fluorescent Lamp - Daylight - T9 - 12" - 32 W from PHILIPS | BMR
Feit Electric 20-Watt 12 in. T9 G10q Type A Plug and Play Linear Circline LED Tube Light Bulb, Daylight Deluxe 6500K (4-Pack) FC12/865/LED/4 - The Home Depot
12 Inch Daylight (6000K) T9 Circline LED Relamp 32W Fluorescent Bulb FC12T9/D | eBay
12 Inch 16 Watt FC12T9 LED Circline Bulb Ballast Bypass – Green Electrical Supply