MAXX Air Covers

I have used the Max Air covers on my previous motorhomes. Always left vents open and never rained in. I saw the Fantastic vents and figured that they would work good. I am very disappointed in the Ultra Breeze covers by Fantastic Fan. I had the vents open and it rained in. They let lots of water in. The openings face to the rear where the Max Air openings are facing down. No problem if you are driving but if parked and the rain comes from the wrong direction be assured that with the Ultra Breeze covers you will have very wet floors.I think I am going to bite the bullet and throw them away and replace with Max Air's.