anyone seen this type of ceiling fan ?

tpi wrote:
https://www.etrailer.com/Enclosed-Trailer-Parts/Ventline/VP-543SP.html

Is this it? I had one in my former trailer which wasn't nearly as effective as standard Fantastic Fan-it was too small. But it didn't sound like chainsaw-and was somewhat useful in the bathroom. You're probably stuck with another one without major surgery.

That looks like it. Thanks for the help.

I may do the computer fan mod.

X2 on the computer fan. Actually quite easy to do.

Replace the fan part with a computer fan. They are very quiet.

https://www.etrailer.com/Enclosed-Trailer-Parts/Ventline/VP-543SP.html

Is this it? I had one in my former trailer which wasn't nearly as effective as standard Fantastic Fan-it was too small. But it didn't sound like chainsaw-and was somewhat useful in the bathroom. You're probably stuck with another one without major surgery.

Be sure it is running the right direction. As far as the noise, that is what they call an RV given. Some fans used in stick homes are obnoxiously loud too.

Have one of them in the bathroom on my RV. It's loud, but doesn't sound like a chainsaw. I suspect you've got some debris lodged in it. My vents usually end up getting small twigs and leaves in them and when that happens they do make an awful racket.

For what it's worth, the small vent fan in my RV does exhaust the steam and smells even though it doesn't create a noticeable wind storm while doing so.

Try taking it apart, cleaning and lubing it before reassembly.
Maybe it's just not working properly. It probably won't make it quieter but it may make it work at an acceptable level. It's worth a shot.

Also, check Amazon and Ebay along with RV suppliers for a replacement that will fit the existing hole.

Installed one years ago in our van. It was noisy, but in that van, nobody noticed.