DYSMIO 13 Watt CFL Light Bulbs 2 Pin GX23-2 Base 2700K Soft White 13W High Output 800 Lumens Double Tube Compact Fluorescent Light Bulbs Plug-in 4 Pack - Amazon.com
Silverlite [Plug&Play] Lengental 5w(13w CFL Equivalent) LED Stick PL Bulb GX23-2 Pin Base, 550LM, Cool White(5000k), Driven by 120-277V and CFL Ballast, UL Classified, 2 Pack - Amazon.com
Feit Electric 13-Watt Equivalent PL CFLNI Quad Tube 2-Pin GX23-2 Base Compact Fluorescent CFL Light Bulb, Cool White 4100K (1-Bulb) BPPLD13/41/HDRP - The Home Depot