Mine is in the bathroom, and when I sit there with the door closed and the fan on, I can feel a breeze blowing in under the door.
I noticed that too . If the fan is on ‘high’ it might be more difficult to open the door :B
Look how much dust gets trapped on the FF screen. Its a strong attic fan.
My previous Lance was sealed so tight , with all the windows, vents and door closed , i could here the pitch difference in the FF motor as I opened the door. I could here the rise in rpm’s of the fan. Try it, see how well sealed your rv is. The class C i have now is not as tight as my previous TC.
The fan works well exhausting cooking odors too.