Upgrading your existing C9 displays to energy-efficient LED is quick and straightforward with our retrofit bulbs. The E17 base screws right into your current C9 sockets, so you can swap them out on the job with minimal time and effort.
 
With a faceted design and smooth color transitions between red, green, blue, yellow, and purple, these bulbs give installs a clean, professional look that really stands out all season long!