I use this as courner traps, they are very thick in the middle and the foam is very dence.
Pro:
They are well suited both for bass traps in the corners and also as deflector on the walls.
They look very nice to.
Con:
The top of them is not leveled so it can look funny,
I wish they come in different colors to.
Also they are not easy to stock toghether as it hard to glue them toghether. Like I put 7 toghether and glue them toghethere.
I tryed duble sided tape, but that dont work, You need to glue them or it will fell aprart.
But they do what they supposed to do and I do get much better audio in my room. I have otehr treatment to, but those is both cheap and work well in the corners.