MAG-MATE MRS030X2437X001 Flexible Magnet Sheets, Strong Magnetic Sheet, Great for Sign-Making, Customizable Magnets, Versatile Magnetic Strips, White Surface

Easy to use, great strength, easy to cut!

I bought this to cover my floor vents to keep cockroaches out. Works great! I cut to size to cover 2 small and one large vent. My roomba just rolls over them, so not too thick to get the vacuum cleaner stuck, and it doesn’t move when the vacuum goes over it.

This product is terrible. The magnet is so weak it doesn't stick. I was expecting something that would easily stick to metal and this is not it.

Works well and be cut to size. Perfect for large shape vents

This review is for using these as a vent cover only. I can't speak for any other type of application.The circulation in my office is terrible. Several of the rooms get freezing cold while others are so warm it's barely tolerable.I bought several of these magnets to block off some of the vents and try to get the system to function a bit better. The vents that I'm trying to cover are on the ceiling, and while these magnets are heavy duty enough that they do a great job blocking the air, they are pretty heavy and the magnet isn't strong enough to keep the covers in place without either taping them down, or attaching additional stronger magnets.The magnet does stick if you are holding the it in your hand, but the second you let go it will fall down. I solved this by just using some clear packing tape to help hold it to the vent frame.So if you're like me and you are using them to cover up a vent then yes, these do work great for blocking the airflow, and if you are using them on a floor or possibly a wall went they will probably not need any assistance. But if you are trying to use them on a ceiling vent just know that you will have to rig something up to help them stay in place.

It's thin, able to cut with a box knife, light on the magnetic ability. I use it to hold small craft dies.

It sticks to my metal floor vent well. Good product.

Works great