Feit Electric 13W/18W/26W Equivalent PL Horizontal 4-Pin Universal Base G24Q/GX24Q-1/-2/-3 CCT Select(2700K/3500K/4100K)LED Light Bulb PL26A/H/CCT/LED/HDRP - The Home Depot
Philips PL-T 57W/840/4P GX24q-5 – Richard Schahl
LH0566 BJB 26.75.420.50 57w, 75w GX24q-5, GX24q-6 base converter for many 4 pin CFL lamp holders
GE Ecolux® F57QBX/841/A/ECO Dimmable High Output Plug-In Compact Fluorescent Lamp, 57 W, 4-Pin GX24q-5 CFL Lamp, T4 Shape, 4300 Lumens | State Electric