Acoustic Foam Panels 6 Pack – 2" x 12"x 12" High Density Soundproofing Wedges for Wall, Noise Absorbing and Sound-Damping, Quick-Recovery, Fire-Resistant – Perfect for Studio, Office, Gaming Room

I got these to stop some of the sound coming from my synology NAS. The foam came compressed, but after a few hours it all done and ready to be used.It definitely made a huge difference in isolating the clicking noise from my HDDs.The price and product is great. Highly recommend.

Estarían mejor y más práctico ,si tuvieran pegamento!!

These foam panels expand to size in minutes after opening the package. What they're useful for is reducing echo or reverb in a room or an area. They are not effective for soundproofing. The only reason I knocked a star off the rating is the listing says they're "sound proof foam panels" when "echo reducing foam panels" would be more accurate I think.

Overall these were a great purchase. I used adhesive and put them in the ceiling of my vocal booth. They do come very vacuum sealed and sucked down to just a few inches thick, meaning they'll need to expand before you can use some if not all of them. I've seen people saying they won't expand back to normal. I have found the easiest way to get them back into shape and get rid of some of that chinese factory smell, is to put about a dozen at a time in the clothes dryer on low for 5 minutes and add another 5 as needed until they return to normal. You may have a few edges or in my case, corners that needed a kick in beanbags with a hair dryer or heat gun on lowest setting to get them to expand. It does take keeping the heat on the edge for a few seconds, so don't move it back and forth too fast. You will soon notice that like some people, it will slowly creep back into its proper shape when sufficiently heated.For installation I used 3M Super77 spray adhesive and gave the back of each tile a light coating, 3 at a time. While they were getting tacky, I measured out the approximate area in the booth and gave it a light coating as well. When both surfaces were tacky, it was go time! Keep in mind these will shrink a bit, maybe 3mm, in the first few days, so pack 'em tight to each other to help counter this issue.So far their performance has been as expected. Nothing to complain about here. I would recommend these to anyone who read down to this point in the review.Peace out!

Worked perfectly for what I wanted, and turned out even better! It has a process to expand the foam to its full potential, this is critical! Super easy to do, just follow the instructions.