DEKIRU Sound Proof Foam Panels Fast Expand, Acoustic Wall Panels 2" X 12" X 12" High Density, Soundproof Wall Panels Self-adhesive Pyramid Design, Acoustic Foam For Wall Door & Ceiling, 36 Pack

What a waste of time and money, it doesn'tblock sound it's to thin and it's not fire retardant. Don't buy..

You get 12 of these in a pack, but I haven't decided yet if I'm going to cut the remaining four and use them as-is, so this is only with 8 of them stuck up there.The foam comes to you vacuum-sealed, and it took mine about a day after opening the seal for them to regain their actual size. If you are looking for these to do a job in a HURRY, these are probably not the blocks for you.Are the 8 of them already up doing their job? Yes they are! I have noticed that the foam blocks themselves are actually not all QUITE the same size, there's a little bit of variation which can sort of throw off your measurements, at least a little bit. The adhesive on the bottom is also not exactly uniform, sometimes it's a little bit away from the edges of the foam. Speaking of the adhesive, I had to remove and readjust one of them and while it did not strip the paint off the walls, some of the foam ripped off my block and remained where I had pulled it from. That might make clean up a little bit annoying, all things considered, but how many people are removing their already set acoustic foam?Also, I am by no means an expert in the usage of this stuff, so please don't use the way I've set them up as a basis as the "go-to" patterns to set the foam up in hahaha.

If you're a hobby streamer or content creator and you're trying to create a quieter environment to record your voice overs, this is probably good enough. The glue is ok, but you might need to add your own if you don't do a good job of installing it (like not cleaning the walls well or putting it on a rough surface). It does fine on smooth walls, at least so far.It isn't the densest foam I have gotten from Amazon - so it blocks sounds, but it isn't going to block everything. There's a TON of factors that go into proper soundproofing, so it can also be installation issues and other factors that lead to it not getting as quiet as you want. I'm just a hobbyist who does too much research, so I can't say it is all the panels fault.

Decent panels, which do not require any special prep before installation.Just unpack, let them be for an hour (I left mine outside to gas off) and they are ready to install.Mind you pyramid panels have slightly less foam than wedge types, so they absorb a bit less in the 200+ range. But in 80-125 they might perform slightly better.3 out of 12 panels fallen off the wall overnight, so I had to use the sticky pads for them

Decent well made acoustic panels. These are not for soundproofing rather for large rooms with an echo. These will help reduce echo quite a bit. I would recommend if you need better acoustics in your room.

It's thicker than most of the insulation I've seen on Amazon, but it's still not as dense as I would like it to be. This means that you will need additional sound barriers placed before this one is put down. The triangular faces of this foam helps deflect sound from inside the room to prevent any echos or cause feedback.

I attached these panels to a large piece of cardboard to put behind a microphone I use to record audio for videos. It absorbs the sound perfectly that normally would have bounced off of my computer monitors and the wall behind my desk. The price is cheaper and easier than trying to book a sound booth. It may not be the most professional audio-recording environment, but they get the job done.

I just installed this and have a little bit of comparison still to do but the installation is for behind my tankless water heater. The noise from this tends to be loud and bleed through the walls easily waking up whomever is sleeping in the room behind it. Previously I've used foam mattress toppers but this seems to work better as it's both thicker and more uniform for noise cancellation. I'm hoping that this holds up well over time, but if the adhesion lets up in the heat of summer I'll come back and note it here. So far it seems to be holding up well and I've not needed to put any staples in the wall like I have previously.