Product review (4 stars): Happy I bought this...
I bought a house that has vents right where I have furniture. I have been keeping them closed so as to not ruin my furniture form the heat or cold. I knew I had to open these vent so I searched for a product that could help me move the air that wouldn't cost me a fortune. I was a little leery after reading the reviews, but I got it anyway. I'm very happy I did. Reviews said that it was really thin. I was surprise that it wasn't what I was expecting. I was expecting it to be like a paint pan liner, but it was a little heavier. It doesn't come with anything to hold it down. Not sure why. So I went and bought a roll of magnetic tape and attached it. It works perfectly and I can't believe the amount of air coming out form under my furniture. Cheaply made, yes, but it does what it says it will do.