Hoppopotomus
Cedar Hollow Brewing
In the picture above of the back of the keezer, on both sides of the hinged door is simply a deadspace between the coffin wall and the shelving unit. I created this space, so I cold attach the logs on the front corners of the coffin from behind. There is plywood on either side of the coffin, then the blue side of the acoustical paneling against that (black side out) and then another layer of insulation. On the inside, I lined the coffin with the acoustical paneling, blue side in and then the cavity that is being cooled is lined with the styrofoam, so none of the blue cotton material will be exposed to moving air. Once completed, I may put a piece of the acoustical paneling across the back of the coffin as well (blue side against the plywood door). As it stands right now, I think that the coffin is very well insulated, the fans move a lot of air volume, and it is way quieter than I expected. Thanks again for the material! 

MAN, this thing is looking great! I'm glad the stuff helped, but it looks like you may have been fine without it.In the pic above with the hinged door - will you be putting any plywood over the areas to the left and right of the door to seal up that area? Not that it matters at all but the blue side usually goes against the structure and the black side is out. The black fabric is used to keep the cotton particles from becoming airborne. Also, it's usually good to have the product on the wind-swept side of the insulation so the sound doesn't reflect off of the structure (or styrofoam) but again, its not a deal breaker.
This is really a VERY cool project and you're doing an awesome job!