6 Bulbs) GE Bright Cool White 26 watt Plug-in CFL G24d-3 Base, 6.7 inch, F26DX, 4100K Cool White Compact Fluorescent CFL Light Bulb - Amazon.com
Osram 012049 - DULUX D 26W/840 Double Tube 2 Pin Base Compact Fluorescent Light Bulb - Amazon.com
LH0888 Converts a G24d-2, GX24d-2 Socket to an E26/E27 Medium Base lamp Holder - Amazon.com
E-Simpo G24d to E26/E27 Adapter (NOT GY24d)2 Pin CFL Socket Adapter 21.8mm G24 to E26/E27, GX24d to E26/E27 Lamp Base Converter,Rohs. 2P in Cross, Need Bypass The Ballast! (10-Pack) - Amazon.com
Amazon.com: Satco S8327, 3500K 26-Watt G24D-3 Base T4 Quad 2-Pin Tube for Magnetic Ballasts, Compact Fluorescent Bulb (Pack of 10) : Tools & Home Improvement
8 Pack) 13 Watt Double Tube, Compact Fluorescent Light Bulb, 3500K Neutral White 4 Pin G24Q-1, Replacement for Sylv.ania 20671 - Philips 38327-3 and GE 97596 F13DBX/835/ECO4P - Amazon.com