CHKADAWA FC8T9/CW Circular Fluorescent Light Bulb, 8 Inch Circline T9 22W Lamp Tube Replacement for Round Ceiling Fixture, Ring Cool White Bulb 4100K 1350 Lumens, G10q 4 Pin Base, 2 Pack - Amazon.com
Philips 22-Watt 8 in. Linear T9 Fluorescent Tube Light Bulb Cool White (4100K) Circline (1-Pack) 391169 - The Home Depot
Feit Electric FC8/865/LED/12 8 in. (22W Replacement) Daylight Deluxe White G10Q (T9 Replacement) Non-Dimmable Circline LED Light Tube | BuyRite Electric
Satco S6501 8 inch 22w T9 6500k Daylight G10q Circline Fluorescent Lig – BulbAmerica
T9 Ring Lamp Fluorescent Tube Circular 22W 32W 40W Primary Colors Energy Saving | eBay