Philips 18W 4 Pin 2G11 Cool White Long Single Twin Tube CFL Bulb | PL-L 18W/41 (4-Pin) | Bulbs.com
2 Pin Base LED Replacement Bulb - Replaces 18-26 Watt- G24D Base Lamps - Ballast Compatible, 4000K and 900 Lumens
Feit Electric 26-Watt Equivalent PL QuadTube CFLNI 4-Pin Plugin G24Q-3 Base CFL Replacement LED Light Bulb, Cool White 4100K (1-Bulb) BPPLD26E841LEDG2HDRP - The Home Depot
LED PL Retrofit Lamp for 2 or 4 Pin CFL Bulbs - Replaces 13-18 Watt- G24d / GX24d & G24q / GX24q Base Lamps -Magnetic Ballast Compatible or Bypass, 3500K and 600 Lumens
8.5PLL/840/GL/BYP Green Creative LED PL-L Lamp | Replaces 18W CFL