The Sunpark LC12012 120v 22w FC8T9 circline lamp ballast with lamp holder attached is a popular choice for those looking to replace their old circline lamps. This ballast is designed to work with FC8T9 22-watt circline lamps or T5 22-watt circline lamps. It features a lamp holder attached to the ballast, making installation easier.
Pros
Works well with instant light and no flickering
Lamp holder attached to the ballast for easier installation
Operates 1 FC8T9 or T5 22-watt circline lamp
Cons
Only has one cord to link to the bulb, not suitable for fixtures with two circular bulbs
Some customers have reported issues with the ballast not lasting long