Westinghouse 3737600 13W Double Twin Tube CFL Warm White Gx2
Satco S8302 7 Watt T4 G23 Two Pin Base 2700K Twin Tube Compact Fluorescent Lamp (CFL)
97635 GE 42W 4 Pin GX24q4 Neutral White Triple Twin Tube CFL Bulb, Each
Feit Electric 13-Watt Equivalent PL Twintube CFLNI Bi-Pin Plug-In GX23 Base CFL Replacement LED Light Bulb, Cool White 4100K (1-Bulb) BPPL13/841/LEDG2HDRP - The Home Depot
Philips 36W 4 Pin 2G11 Warm White Long Single Twin Tube CFL Bulb - Amazon.com