Magnetic Vent Cover – 5 1/2" x 12" Extra Thick Wall/Floor/Ceiling Vent Covers (4-Pack) That Will Reduce Sound, Very Flexible, and Will Stick to Your Vents – Made from Premium Magnets by Kelbert

My vent sounded like a washing machine. I smell what everyone is cooking it was awful. As soon as I put the cover on nothing. I was skeptical of this product but it is doing what they say it does. Good price delivered quickly so I am more than satisfied.

I was surprised at how well the magnet works on these. My plan had been to take the vent off and lay it on top before replacing it but they are strong enough they stuck perfectly on the outside. Totally recommend!

i cut it to fit my vents and it works pretty well, stays in place and mutes the sound

Stick really well without falling off.

So these were ordered for my older home with unused, large vents that carries sound. The color matched almost perfectly and I was able to cut out side cuts for the vent screws with basic scissors. They have helped decrease sound and can barely tell they’re there. They have a strong magnetic grip and are well worth every penny

These magnetic sheets are wonderful. Works great on my furnace-air conditioner wall vent. Nice and thick and should work very well for blocking cold air with a/c.

I bought this and another type of magnetic cover (Eureka brand) to compare. The Eureka one was more floppy, which was better because it still stuck to the vent when I touched it/pulled gently. Meanwhile, the stiffness of this one meant that touching it on the edge lightly made it tip and fall off. And its stiffness seemed to hurt a little more when it fell on me ha!

I bought these to cover the vent over my desk at work. It is absolutely freezing and it spits out this spot that lands all over me and my desk. It's absolutely disgusting! These magnets are strong and went up easily. The vent is 48" so I used all four to cover it up. I am grateful for not having to be rained on with toxic dirt all day every day anymore.**UPDATE - Not only are these saving myself from near freezing to death at work, but my boss just asked for the link so she could buy a couple more sets for the office vents.Fantastic seller btw!!!