Non-shunted Turn Type T8 Lamp Holder,TWDRTDD UL Socket Tombstone for T10 T12 LED Fluorescent Tube Replacement, Medium Bi-pin G13 Socket for Programmed Start Ballasts (Pack of 3) - Amazon.com
Outdoor Lamp Holders - Mitronix
Leviton Fluorescent Lamp holder Short Type, White | The Home Depot Canada
TWIN LAMP HOLDER W/STARTER HOLDER - A-Tech
Non-shunted Turn Type T8 Lamp Holder JACKYLED 20-Pack UL Socket Tombstone for LED Fluorescent Tube Replacements Medium Bi-pin Socket for Programmed Start Ballasts - Amazon.com
What are the different types of fluorescent lamp sockets? - ledsockets