We purchased our Airstream with two ACs. A new unit in the kitchen area, and the original unit above the folding door. We have finally decided it is time to remove our original ac. With a folding door we will need to move the new AC from its current location in the kitchen to the spot of the original AC so we will be cooling the rear of the trailer as well. First, was there a third Astrodome where my new AC is currently located? Is there anywhere selling or anyone selling the original Astrodome? Is there a market for the original AC units? Ours blows, just doesn't cool. Any help would be appreciated.