Bummed Out By Bath Fan
And the units they had were all by one manufacturer. There is no choice? The grilles were all plasticky. I think I'll just have to get over that - and admit that they are more attractive than my old silver metal one.
I've checked online, and Lowes has similar units (same maufacturer under a different name).
Mike suggested that I just replace the motor, and that sounds like a good idea to me. I don't think HD had any motors. I will hit the internet and see what I can find. So for now, looks like my bathroom will be a sauna.