They Work Great - But Here's a Better Way to Mount Them
I bought two sets of these to treat my new home studio, a converted bedroom. I promise I'll get to the panels in a second, but first a word about the walls and why I didn't want to use the supplied hardware.
I just bought my condo and it took a coat of primer followed by THREE coats of paint to finally cover the depressing midnight blue grey on the walls with a fresh, light peach. Before that could be done, I had to have a full-wall mirror removed. So it was a pretty big, expensive, labor-intensive deal to get those walls to look good. Would I even THINK about putting 32 large screws with drywall sleeves into those walls? Nope! Someday, I'm going to sell this place and move onward (and upward, I hope) and there's no way I would be willing to yank out that hardware and then fill the gaping holes.
The tiles and panels seemed lightweight enough for adhesive Velcro strips, but I wanted to be sure they would hold up for a long time. I ordered some Velcro Extreme Outdoor strips. They are STICKY and the Velcro holds like crazy. Now, we'll see if they stay. Hope so; I really don't want my pretty new wall riddled with holes!
Oh...and as for the tiles themselves, there is very little reverb left in that room. A dramatic difference! The price is fair, too. Sure, you can save a few bucks making your own acoustic panels out of sheets of fiberglass insulation (YouTube has lots of videos) but that's messy and even hazardous work; you don't mess with fiberglass. After buying the fabric, insulation and adhesive, you don't save that much anyway. These are beveled nicely and are thick and tightly covered with linen-like fabric. They look clean and neat. I'm very happy.