you can purchase one if you want and it even has the H3 logo on it. i think several people on here got them a while ago, theres a thread and pics on this if your interested.
Those people that purchased it said it does not help with insulating sound (at least thats what i think i heard, could be wrong, check the thread link below), but it looked pretty good.
heres the link to that tread:
http://www.elcovaforums.com/forums/s...ood+insulation