Acoustic Diffuser - 11.8 X 11.8 X 1.2 Inches Sound Proof Wall Panels,Wood Acoustic Panels Reduce Distinct Echo Preserve Room Liveliness,Decorative Sound Panels for Walls

Each piece is individually packed, there’s zero damage from shipment.I did have several slightly curled in my previous purchase, placed them under a 45lb barbell for a week or two to flatten them out. Then sticking them on wall with 3M commander strips, been a year, they never curled again nor fell off.

These are diffusion panels, not absorbers. I needed a little more diffusion, found these, and the price was right! Well built, easy to install with some sticky tape and small nails just to make sure.

Bad when fix with tape it distorts as wood plate is thin and can not fix

While they do look great on pictures, in real life they feel a bit cheaply made. I ordered 12 to make a diffusing / accent wall in my studio.Most of them have an issue where the back plate bow and make it almost impossible to install with double sided tape, PL glue or command strips without requiring screws or nails that are hard to put without ruining the look.3-4 of them are not really flush on all the sides leaving bigger gaps when trying to put a few side by side.While they would probably perform OK as diffusion panels if « aesthetic perfection » is important to your setup, I would not recommend it.

I had one of the five I purchased warp on me. It literally pulled the plaster and paint off my wall. But, the other four were gorgeous. They’re effective and I think they do a lot for my space. The one that warped and ripped up my wall is still hanging, it’s only really noticeable when you sit near it. But, I don’t think I could actually take it down without it pulling a huge chunk out of my paint and mud.