Sonic Acoustics 12 Pack Acoustic Foam Panels 7" X 7" X 12" Sound Absorbing Panel, Bass Trap Studio Foam, Corner Block Finish, Sound Panels Soundproof Sound Insulation Absorbing

Ignore the reviews of folks saying they arrived flat; they're compressed, vacuum sealed for easy shipping .. of course they arrived flat! I bought these a year prior and just got to opening them up for use. Bought a 12pk of pyramid pattern and it arrived in a single vacuum sealed package. The inner pack had two vacuum sealed packs containing 6 compressed panels. I tried both methods to revive the foam and both worked, with some notes...If you've never worked with foam before, MOST foam products ship to you flat packed like these did. The leave out and let them rise method works best in a room that remains warm (between 65-75°F) with air flow. Sometimes the panels need more than 48 hours to fluff up, especially if they've been packed for awhile.Of the two methods, the soak and dry method worked best and fastest! A few tips:1. USE HOT WATER. Get the water as hot as you can safely handle and soak the panels one at a time in a sink. Don't drop and flood them... hold them up and soak them under the faucet. If you have a hose you can use, even better. Soak the whole panel. If any edges still look thin or dry, use your fingernails and scratch the edge of the panel. As you scratch it you'll release the pressed edges. I promise they're not sealed or cut wrong. It may take a little effort, but they're fine. Make sure to really wringe them out before throwing them in the dryer. Use MEDIUM HEAT in the dryer for 20 minutes. If they're still damp, throw them in again for 10 minutes.Of the 12 panels, all 12 fluffed up fully however I did take the air fluffed panels and soak/dry them for fullness. These worked GREAT! Sound dampening in a recording corner for half the price!

These arrive in a HIGHLY compressed state, nested face to face and vacuum packed. I would not expect these t oexpand on their own.After unsealing wrapping, I gently pulled each of the paired pieces apart and thoroughly soaked them with a hose outside. I wrung each piece out thoroughly, again gently, and soaked them again, leaving them in full sunlight for several hours to see if they would expand with the water contained within the foam to evaporate and possibly aid in decompression.This worked for about four or five of them, but the rest I had to tease into shape by lightly tugging areas that remained compressed.Ultimately, I was successful and got them all fully expanded as you can see in the two that I photographed for my review.These are not as dense as the pro level stuff, but I have seen a lot lighter. At this price point, I think they are an excellent buy and will serve well in chopping low frequency returns from the corners of a small studio.

We bought these as a replacement for a set that wasn’t very good. These were much bigger. Only downside is that they don’t come with adhesive. What they suggest is a spray on, but would want to use that because it would make a nightmare for removal lol. 3M has not proven to be useful either, because 2 have already fallen. The ones in the photo are being held up with tacks, which works but can look ‘tacky’ 😂 if you’re worried about aesthetics.

I’m on the move to create the ultimate white gaming/work station office. I want most everything to be lighter colored which is really hard to do.These panels are close enough for me as I am being realistic in not everything can be shiny bright white anyways.I applied these to walls that had a little grit on them with this “EZLIFEGO” double sided tape I also found on Amazon as well. It holds up remarkably! Just make sure to press the tape on well and press hard on the panel for atleast a few seconds to ensure it’s going to stay on. I plan on getting some pearl white glue to use with my hot glue gun to seal the edges of them together for a more pristine look.I’ll probably end up purchasing atleast a few more packs of these or maybe even a dozen more to complete the entire office I work in. love the way they look and the quality of them seems like it’s really going to help block out noise which is also very important for me as I record music as well.

There is no rhyme or reason, some expand, some don't. Tried all the motheds: warm water (multiple times), dryer, left them out for a week, no dice. You will tear them before you get the defective ones to expand.

The material is good for the price, hard to complain on that front.Check other people's pictures, they all have some truth to them. DO fully soak these in water (to get rid of the smell and start expanding them), DO wring them out (gently so you don't rip anything), and DON'T put these all in the drier at the same time and forget about them (you can choose to leave them to dry in a warm space instead).I put all of the bass traps in my drier and thankfully they expanded and popped the drier door open, stopping the cycle before any major tearing occurred. A couple pieces had some small bits of foam torn off, but nothing extreme. However, the hot air and enclosed space has made some of these form permanent wrinkles and left others slightly misshapen (i.e. curved on 1 side or not 90 degrees in the corner). In the end about 1/4 of them actually look as advertised.As for the 3M stickers comment in the title, the "frequently bought together" on amazon and the instructions that come with the foam recommend 3M adhesives but they hardly do the job. I've used command strips and the 3M double sided foam tape twice now on this type of acoustic foam and neither will stick for long since it's so porous (low surface area for adhesion).For my last project I used tacky glue to mount acoustic foam to a sheet to hang up, this time since they're in the corner I'll probably just use pins to make sure these stay in. Seriously, just find some alternative to tape okay? It's not going to stay up for long otherwise.