DEKIRU 12 PACK Acoustic Panels, Sound Proof Foam Panels Self-Adhesive, High Density Sound Proof Panels For Walls, Door Soundproofing, Wall Panels For Interior Wall Decor, Home and Studio (Grey）

Decent product. Would not call it sound blocking, but definitely helps reduce sound. Way less reverb around the room.Easy to install. Adhesive covers the entire square. I peeled one off after leaving on the wall for a bit to see what would happen. Adhesive stuck more to the wall and came off the foam piece. I am okay with that, glad it did not peel off the paint. Adhesive came right off the wall with a mr clean magic earser.

The product is very good. The adhesive backing works well and is very sticky, and the adhesive cover peels off easily and cleanly (unlike most products). I'm suspicious of the flame rating. I lit some off-cuts on fire with a lighter and the material seemed to support a flame, even without the lighter present. It did appear to self-extinguish after 30 seconds or so, but prior to that it burned vigorously. I would be worried about this if it was near an ignition source.

I put them inside and outside my room door and the sound still going through.

Worked out great for my music room. Super easy to install and cut to fit with a standard utility knife. Seemed to help filter a decent amount of noise into other rooms for what it is and adhesive is holding well on the ceiling two months after install.

I love the color and the functionality and i am happy they stick to the wall BUT they also ripped paint off my wall and left sticky residue in other places. So beware of these kind of like command strips in a way. They stick so well though I can’t complain too much. Rather that than they fall off the wall.