Magnetic Vent Cover –8" x 15.5" 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

At first, I thought these were too big, but now I realize that it is the size it is so that it creates a full blockage of the floor vent. These are sturdy and work really, really well. I installed them on nearly all of my first-floor vents, cranked up the A/C, and for the first time since moving into this house, it is actually cool upstairs.

Maybe too sturdy? It was hard to cut them to the exact size i needed for my vents, but once there, they havent moved and keeps the air going thru the edges.Recommended to block / stop vents that might not be needed al year.

I bought these to replace thinner magnetic ones that I had on my ceiling vents. Those were still letting air through. These new ones are thicker and the magnets are much stronger. I would recommend them.

I had some lightweight covers that wouldn't stay in place, so I took a chance and ordered these. These are way thicker and heavier that what I had and it doesn't look like there will be any issues with these falling off.

I did not want extra thick. I cut these up to hold dies for card making. They are way too thick for that. If you want a heavy vent cover, this product is for you!

These work great! They were so easy to put on. They are magnetic. They look really nice! They work as advertised and I'd highly recommend them!

The size was generous, they were nice and thick, and the magnet actually stuck well to the registers (these are replacing another brand that did not stick!). I'd 100% recommend these!

This product was exactly what we were looking for, which is crazy because I wasn't sure they existed. We also recieved a thank you note from this small family business. I always greatly appreciate wonderful customer service, and this company has it in full. Highly recommend.