Bests & Worsts Reviews from Amazon

I read the reviews. Knew I was taking a chance on these things. But they're pretty cheap so took the plunge, knowing I had a back-up plan. Sure enough, these covers won't stay up on a ceiling vent, even with no air flow. So I resorted to back up, which is button magnets on top of the covers. Don't laugh. These are not your mother's refrigerator button magnets. They look unobtrusive but are NOT for sissies. I got some neodymium button magnets (Part No. ZD3) from K&J Magnetics on line ([...]). Pack of 10 for 5 bucks. They are the strongest magnets in the world and it's even hard to pull one from a stack of them. I use six per cover because I like three on the long side but 4 total would likely do. They look fine and make the vent covers do the job which at they fail so miserably on their own.