10x 18 watt CFL 4 pin Energy Saving Lamp 18W Cool White 840 G24q-2 Double turn : Amazon.co.uk: Lighting
26 watt 4 pin Cool White GE BIAX-T/E Compact Fluorescent Lamp
Philips CorePro 9 watt 4-Pin G24q-3 Cool White PLC LED Lamp
Feit Electric 13-Watt Equivalent PL Quad Tube CFLNI 4-Pin Plugin G24Q-1 Base CFL Replacement LED Light Bulb, Cool White 4100K (1-Bulb) BPPLD13E841LEDG2HDRP - The Home Depot
8.5-Watt G24Q (4-Pin) CFL Replacement LED Light Bulb Horizontal Applic
Feit Electric 32W Equivalent PL CFLNI Triple Tube 4-Pin GX24Q-3 Base Compact Fluorescent CFL Light Bulb, Bright White 3500K (1-Bulb) BPPLT32E/35/HDRP - The Home Depot
Simply Conserve G24Q/GX24Q horizontal PL 18-Watt EQ Single tube Daylight Gx24q-4 Pin Base LED Light Bulb (20-Pack) in the General Purpose LED Light Bulbs department at Lowes.com