Tom n Phyllis,
Max air vent covers and Max Air fan are 2 different items.
The first, is a cover that goes over your regular vents on rig, allows you to leave the vent UP and OPEN, but no rain, etc can get in.
The second, is a fan, to take out heat or bring in cool air. We LOVE ours, it is not as noisy as our Fantastic Fans have been.
We did install a Fantastic fan in the bath area, one of the more inexpensive models, to help get the moisture out of the bath.
So, we have 1 Max Air fan and 1 Fantastic Fan and several Max Air vent covers.
Hope I did not confuse ya more
Cheers, and hey, WHEN are you ordering???
Carol