Need some help. If anyone knows of the best way to build an acoustic box to house my inline fan in order to reduce the noise and vibrations of my fan. I have a silencer comming and acustic duct this should help with noise of air in and out. I think the box im trying to find is called a Hushbox. I have tried hard to research this but am comming to a dead end if anyone knows or has build one PLEASE HELP!!!!