There are only several small ceiling lights in the apartment here. We are the second owners and the light I removed was original equipment as the buildings were constructed sometime in the early 1990s. (We bought the place in the late 1990s.) As we replace electrical and other fixtures, we notice how they all used to be made in Canada and were strong, rugged, and heavy.
Earlier in the week, I got several, thin, 12" flush-mount LED ceiling lights from Amazon. Of course, they were made in China. I managed to get one installed today. It took me a while to figure out its universal mounting fixture. I had that piece of plastic upside down for a while and couldn't figure out why it wasn't working. The new wires are so tiny and frail compared to the thick copper wire of the building. We chose a temperature that we thought appropriate for the area. It is working. However, I'm still digging out spackled ceiling bits from my nose, teeth, and hair.
I guess I'll wait to install the other one in the utility closet some another day.