Thanks for the advice and congrats on the sale! I'm new here so my post had to be approved, so that's why you didn't see it. These LSI's are not fiberglass either. I'm probably not going to open them anytime soon, but good to know that it is possible without causing too many issues. I really like them a lot, and they have made me fall in love with my music collection all over again. But if I could get 3K out of them, I'd have a hard decision to make.