Here's an exhaust fan in the ceiling of a kitchen that's probably around 40-50 years old:
A non-contact voltage detector shows that the fan does get power when the wall switch is flipped on. However the fan doesn't spin.
I'm wondering if this size/shape/type fan is still on the market, or if a similar one could be retrofitted with ease without having to go up into the attic (there's no floor up there).
I wasn't able to find any model/brand written on it.