One of the interesting things that I have known about North American lighting is that they have sold 9 inch 30W circline fluorescent lamps primarily for electronically ballasted fixtures, ceiling fan light kits, and screw in adapters for energy efficiency upgrades throughout the 2000s and early to mid 2010s. I wonder why several North American lighting manufacturers specifically decided to sell 9 inch 30W circline fluorescent lamps for dedicated electronically ballasted fixtures for energy efficiency upgrades instead of sticking to solely developing electronic ballasted 20W, 22W, 32W, and 40W T9 circline fluorescent fixtures and why use a circline fluorescent lamp already popular in Japan primarily intended for preheat fluorescent fixtures and market it almost exclusively for electronic ballast use in North America?

A prime example of one of those 9 inch 30W T9 circline fluorescent lamps is the TCP 32030 circline lamp. Even though it is primarily intended for dedicated electronically ballasted fixtures, ceiling fan light kits, and screw in adapters, they still work fine in Japanese magnetically ballasted preheat fluorescent fixtures.

I just always get a kick out of reading the reviews from buyers saying that they finally found the lamp they needed for their ceiling fan light kit after struggling to find the correct 9 inch 30W circline lamp in stores!!