Sorry I couldn't add any more details on the box construction itself, this website has been crashing constantly for the past 24h, so here's what I didn't mention in the video.
The lower and higher compartments would be separated by a sealed shelf that would seal with a rubber gasket on the door when closed.
I said 3/16" thickness but I'm not sure of that maybe it's 1/8"?
The lower compartment would be lined with soundproof material on the inside, with vented air intake/exhaust and the generator would be mounted on a baseplate fited onto 4 vibration pads with springs (used for small hvac equipment, under 100lbs)
The main idea is to hardwire the generator to the transfer switch with an extension and take advantage of the remote start feature when ever I need it, without getting out or setting anything up.
The higher compartment would also be vented near the bottom of the shelf with four 2" diam holes with wire mesh,
I already have an LP gas tank under the van this would be an extra tank I would hook up to with a 4 way tee I added specifically for that purpose and yes I would remove it from the box when using it, it would only be in there for transportation purposes, it would sit at least 30" above the rear bumper or 50" above the ground so unless being rear ended by an 18 wheeler I don't think it would take a direct impact. I hope this complies with DOT regulations, I will check with Canadian laws (fingers crossed)
Remember that van's door would be closed almost all the time, if I were to open it for whatever reason, I would support it and close it back immediately. the weight I guestimated at 250/300lbs would rest on the rear bumper.
I hope this helps clarify things.
I also hope this website will not crash when posting this...