G24 to E27 E26 4-Pin LED Light Sockets Adapter, Light Bulb Socket, Bulb Base Adapter, Converters Lamp Holder (Pack of 1) - - Amazon.com
4-Pin Snap-In Lamp Socket for Panel - BuyUltraviolet
🏠 🔌 Leviton Compact Fluorescent Lamp Holder CFL Light Sockets G24d-2 Base Bottom Screw-Down 4-Pin 18W 26725-4A2 - In Stock - Fruit Ridge Tools
G10Q 4-Pin Tube Light Socket,Ceramics 4-Pin G10Q Base Socket for FC8T9/DL Circline Fluorescent Lamps (Pack of 2) - - Amazon.com
Lampholder G10.2q 4-Pins - Neutral - Proflamps
E-Simpo® 6pcs 2G7 4-Pin H Lamp Fluorescent Light Holder 2G7 Base Horiztonal Single Head Tombstone Lamp Socket for LED Fluorescent Tube(2G7) - - Amazon.com
4 Pin G24 to Medium Base - Socket Adapter | CityLightsUSA.com
2G11 Lampholder,4-pin Lamp Socket Connector for Fluorescent or LED Tube Lamp (Pack-2) - - Amazon.com
LH0272 2G11 4 pin CFL lamp holder/socket with two hole and snap in horizontal mounting