LH0224 10 or 13w G24q-1, GX24q-1 4 pin CFL lamp holder/socket with 2 hole horizontal mounting
An Explanation for CFL Pin Types — 1000Bulbs Blog
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