I have a couple of lighting fixtures in my apartment that look like this:
![1]](../../images/3816164455.webp)
The metal base goes directly to the ceiling and the posts holding the glass dome, while threaded, do not turn or slide in any direction. I have tried rotating the whole fixture, but it seems to be moving the electrical box in the ceiling without loosening. How might this unit open?
![3]](../../images/3826257046.webp)