Lights of America Model 4025 instant 22w T9 preheat circline fluorescent fixture 

While looking at lighting on Etsy, I found this Lights of America 22w T9 preheat circline fluorescent adapter that came with this diffuser. I decided that I had to get it because l finding diffusers that attach directly to 22w T9 preheat circline fluorescent adapters is not very easy.
I also decided to get it because when I was a child and noticed some T9 circline fluorescent flushmount fixtures, I initially thought they had T9 circline adapters with diffuser pipes attached to them. As I found this 22w T9 preheat circline fluorescent adapter on Etsy, it had fulfilled my childhood imaginations. In this picture, you can see the instant light fixture installed on a Jonathan Y bare bulb gooseneck table lamp.