12 Pack Self-Adhesive Acoustic Panels 1 X 12 X 12 Inches - Acoustic Foam - Studio Foam Wedges - High Density Panels - Soundproof Wedges - Charcoal

EDIT*** the seller has reach out and rectified the situation, so I am happy with the product/order.I ordered two packs of this... which was too much, but one wasn't enough. Good thing I got two, because about 15 of them *from each pack* where not up to par for quality. They were either cut very thin or never fully expanded, and others were proper thickness but had "tags" at the peaks about a half-inch tall. Sound dampening was as expected. Had to use a crap-ton of adhesive spray to get them to stick to the wall. The sticky squares that Amazon recommends you buy with them stick to the wall, but not the foam, so don't buy those. Have heard mixed reviews with velcro-like products, didn't try that method. Probably would go with a different supplier if I order this again in the future.

Ok. Let me start by saying these arent top studio quality acoustc pannels, those will set you back a lot more than these. HOWEVER, for the price and the quantity you're actually getting a good deal out of this. There's some reviews saying these didn't expand or that they came defective, and as someone who's bought this product twice, I can confirm that a handful indeed do come thinner, but out out of the 2 times ive bought this product, only the second batch I ordered had defective panels, and it was only 4 or them, I counted. As for the foam not growing to its proper size, I didnt have any issues with that. I put then in a spare room for a few days and let them sit there untouched and they expanded just fine. Addressing the thickness of the foam, I actually measured it and there are 3cm from the base of the foam to the top of the wedge, which is about 1 inch, exactly as advertised (bear in mind im excluding the defective units from this claim, as these arent even 1cm thick). The panels also arent all the same size, although most do reach 31cm each side, which is the equivalent of 12in. So to restate my point, this product has great value for the price. The thickness of the foam is as advertised (1 inch or 3cm), the panels, although very slightly varying in their dimensions, are generally 12x12in (or 31x31cm), the faulty units are few and can be counted on a single hand, and they do indeed expand (WITH TIME) to their advertised size.I want to add a section to advise those who cannot get these to stick on their walls. FIrst off, any double sided adhesive tape or command strips will not stick. These will stick to the wall just fine, but the foam is too porous and will come off extremely fast, lets say, 10-15 minutes from the time you stuck the panels to the wall. Instead, I recommend using a heavy duty constructive adhesive, such as DynaGrip (I tried several brands, and even though they mostly all work the same, I feel like this ones a tad more sturdier than its alternatives), which comes both in a squeezing tube and and a tbe that requires a pump gun or whatever theyre called. I add glue in dollops, in approx. 1x1x1cm size, 3 times on each side of the panel, ergo 4 on the corners and 4 in the spaces between the corners (so 8 dollops of adhesive) as well as the middle, Im sure you could get away with just the corners and the centre, but I found that this way the panels will not fall even if you lean your entire body on them (I tested this, and my cat also jumped on one and the panel didnt even budge, and she is one hell of a chonker). With the adhesive on the foam you can spread it with your finger or a stick or a paint knife, or anything really, and then just stick it to the wall. After that just press the panel on each of the zones in which you put glue (not for a long time, just give each zone a quick press and thats it, do it twice if you want to be cautious). The adhesive sticks on cement, wood, drywall, and even on metal. It will even work if you want to stick your panels to the roof, no problem with that, just make sure you give the roof panels a hard squeeze to make sure gravity doesnt tear it off while its drying.If youre looking to make a home studio or just fix a terribly sounding room, this is an awesome deal that wont break your bank. They actually d help the sound. REMEMEMBER, these will NOT soundproof your room, these will only treat the echo you can hear inside a room. I recommend complimenting these panels with carpets and rugs, as well as corner bass absorber blocks.Im uploading images of the panels individually, how they look hung up on a wall, what the defective units look like, the measured thickness of the foam, the adhesive I used to hand mine up, and the way I spread the adhesive for anyone that requires help with that. Also, I've already had these panels on my walls and roof for 4 weeks, still holding up perfectly.4 stars out of 5, the missing star is due to the defective units.

Don’t be dismayed when the small shrink wrapped package arrives. What compresses to a block perhaps 8 inches thick expands to a stack higher than my (adult male) waist when unpacked and left to expand for 24 hours as recommended.As neutral in color as you can get, the panels look really nice and surprisingly professional in my little home recording studio. Using the “mirror trick” to find reflection points resulted in a noticeable difference (for the better) in my modest setup (a budget $100 usb mic, decent m-audio monitors, a bare bones windows 10 machine running Ableton live 12). These panels were the finishing touch on a basic setup that allows me to produce audiobooks at home. I had a fairly large room to treat and needed a budget option here. These fit the bill nicely. A lot of panels at an affordable price.Be aware you need to provide your own adhesive, that’s the only reason I didn’t give a 5 star rating on adhesion—there isn’t any. A great solution for me was the thick gummy 2-sided tape made specifically to NOT mar paint or drywall when it’s removed. I was worried the foam panels might not stick to the tape well enough, but it was an unfounded worry.

For starters I want to say I gave this product the benefit of the doubt until it was undeniable that this is a waste of money.Maybe for you it will be different but for me this wasn’t a good purchase at all. I bought 5 packs in total I believe each pack had about 50 something in them and I glued every.single.one in my room and there’s basically no difference I can still hear normal volume talking in my room. They did not do what they was supposed to do which is apparently soundproof the space my room is not soundproof at allMy room now just has the slightest muffle effect to it put your hand and inch or so over your mouth and talk….that’s how it sounds so again basically no difference and I spent good money on these panels most of my walls are covered in the panels I even double layered some and even triple layered my door but it makes no difference I would recommend getting panels from another merchant

I was skeptic for the price, but I placed them behind my screens, on the ceiling and behind me. The installation process was easy, they stick well, but doesn't seem like its gonna rip off the wall when I remove them at some point. The sound dampening is noticeable!

These acoustic foams are so good which I use previously. I took risk to buy it but I am happy after that .