I was wondering if the rockboard 60 (not soft wool) is ridgid enough to hang without a frame? How long does it last without deforming or saging?

http://www.atsacoustics.com/item--Roxul-Rockboard-60-Case-of-6--RB60.html

I've never used that material. But this begs the obvious question: Why don't you call the vendor and ask them?

--Ethan

that is 6 pound and YES it would hang without a frame but will look pretty bad. I would build a frame with any kind of mineral wool. We use 8 pound and still have a frame.

I was looking for a unbiased opinion.

Thanks for the info.