Wow! So yes I would get some heavy duty half by 3/4 wide weather stripping and press it between the cab and coach and seal that up. Mine has worked awesome and has cooled the cab down tremendously along with way less road and engine noise. My dealer wants it for at least a week to go they my punch list and we are using the RV every week until mid August. I told them they will have to wait and my sales rep was not too happy.
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