Interior Wall

I was planning on using tempered hardboard for the interior walls but I had so much left over MFD and OSB I thought I would just use it up. I decided to utilize the MDF on the front and right wall since these both face the house and the OSB for the other two walls.

Even though OSB snd MDF are a different thickness I was able to get it close enough followed by a thick layer of silicone in all the seams and the sound deadening foam.