56 Pack Acoustic Foam Panels 1" x 12"x 12" Saiqiang Sound Proof Panels Black Soundproofing for Wall Fire Resistant Wedges Insulation Noise Absorbing for Office Home Studio

I mean, they’re okay. Just be ready that this material doesn’t really stick to many surfaces, so I used a hot glue gun. Also, the sizes are different, and some of them stay flat and don’t puff up. But for aesthetics, they’re good.

Dear customers, I have done deep research looking for the best acoustic isolation cost benefits.I noticed many complains about this cheap product regarding to deformation after unboxing.I would like to share my experience with you.I decided to buy this product which was the cheapest I could find and take my on risk.When I received the product from Amazon, I unboxed the packaged and release the acoustic foams from the vacuum bag I got disappointment after 48 hours when I saw more than 90% of the foams with different level on deformation on the borders.Luckly there is a one-page instruction saying to use the dryer machine to expand the foam and get them in a perfect shape.Following the instruction, I could recover 70% of the foams just putting the foams in the dryer machine medium level for 5 minutes.I realized that some foams could not be recovered 100% and I put the remaining foams deformed into the dryer machine medium level for 5 minutes more and repeated the process for couple more time.In the end I could get 90% of de foams perfectly expanded total 48 of 56 foams. The remaining 8 foams I would say that they are in a good shape not perfect even being slight deformed.Well, that is my experience, and I hope that I could have help someone to take the decision on buying this kind of Acoustic Foam

Not the best honestly I have had better results buying better more dense foam and building my own

Out of 56 pieces, around 6 were deformed at sides.

Low-density foam. Panels don't have a major effect on sound dampening.