Thanks guys. I am sure Dynamat or other sound deadening would work, but this worked well for me. The OSB and gasket for the top, work surprisingly well. It sits on grass, so that helps as well. I also have some clasps holding the lid shut that weren't installed on the first picture.
The exhaust port is on the fan side. It sucks the fresh air over through the holes and over the generator and exhausts out the port.
Make sure the fresh air goes over the middle of the generator, or whatever part is the hottest on yours.
I also caulked all edges where the boards meet. It took a couple nights after work and some brews to make. This year I think I will seal off the fan to the OSB (the 1/2" gap) with some foil tape to really ensure the air flows well.
I only use it at the outdoor music fest once a year so I am not that concerned about how much a hassle it is transporting it since it's only once a year.
The height overall is 24" because it had to fit in the back of my truck on my platform, where I only have 24" clearance. Length is about 5' I think?
I had to get creative for carrying cargo when I had my popup. GF and 2 daughters really don't know the definition of "packing light" lol. This platform I made did play into how large I could make the box.
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