12 Pack Self-Adhesive Acoustic Panels, 12"X 12"X1" Sound Proof Foam Panels, High Density Soundproof Wall Panels for Home Studio, Acoustic Foam Wedges Absorbing Noise (Black)

You need to separate the rows from each other, when mine were delivered, they weren’t taking shape until I realized the end was stuck to the adhesive, making it impossible to reform to the original shape.

Good panels. I am using them on the doors of a metal cabinet that I put on a wall in my studio. The majority of my room is done with 2" foam, so be aware that these might not be thick enough for all applications, but for some applications they are perfect. Takes about 24-48 hours to decompress to full size, unless you want to try the water and hair dryer method (instructions included). Good purchase for my application.

Feel cheap and rip in half when you try to remove them

I was VERY pleased that I got the order within 2 days. I was surprised by the availability. I was pleasantly surprised that the adhesive was as effective as it is. Shaping odd places by scissors was no problem. I don't know if other products have greater sound absorption qualities but I experienced a marked reduction in dB in my home "studio". For my first effort in achieving an acceptable CXR rating with minimal investment? I'm hopeful. Even if I get rejected this batch will have fewer corrections to make and more specific ones for me to identify. It's all good.

I noticed my loud ass reverbs don't bounce that many times in the room as much.