Non-shunted Turn Type 4-Pack UL Listed T8 Lamp Holder Tombstone Sockets LED Fluorescent Tube - - Amazon.com
Shunted vs. non-shunted sockets: How to tell what you have - YouTube
What type of socket do I need (Shunted vs Non-Shunted)? | Sunco Lighting Blog
Screw Type T8 Lamp Holder JACKYLED 20-pack, UL Non-shunted Light Socket for LED | eBay
LH0394 Shunted, slide on or screw down mounting T8 to T12 med bipin lamp holder/socket
Amazon.com: 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 : Everything Else
Shunted vs Non-Shunted Lamp Sockets | Mitronix, Inc.
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
GE 2-Pack White Lamp holder in the Fluorescent Lighting Parts & Accessories department at Lowes.com