Atlantic UV Lamp Socket | 4-Pin Snap-In Lamp Socket for Panel (.025 to .040 Thick)
G10Q 4-Pin Tube Light Socket,Ceramics 4-Pin G10Q Base Socket for FC8T9/DL Circline Fluorescent Lamps (Pack of 2) - - Amazon.com
Bonlux Gx24q to E26/E27 LED Light Sockets Adapter, Gx24 Short 4 Pin to Medium Edison Bulb Base Adapter, 4 Pin CFL Lamp Base Converter, Remove Bypass the Ballast, 10-Pack - Walmart.com