Light Efficient Design LED-7318-40A 12 Watt LED PL Lamp - 4-Pin G24q/GX24q Base - 4000K - 1,100 Lumens - 120-277V or Ballast Compatible | PROLIGHTING
LH0566 57w, 75w GX24q-5, GX24q-6 base converter for many 4 pin CFL lamp holders/sockets
Buy Philips TC-TEL 57W/830, GX24q-5 at light11.eu
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
4 bulbs) GE 39276 - LED 4 Pin GX24q base, CFL Replacement, 18.5 watts, 1950 lumens, 3500K, LED Light Bulb - Walmart.com
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 Horizontal G24Q Base 12-Watt EQ Single tube Daylight Gx24q-4 Pin Base LED Light Bulb (4-Pack) in the General Purpose LED Light Bulbs department at Lowes.com