If you are installing a Servel type refrigerator the answer is NO. This type of refrigerator works on convection, the movement of air up across the back of the unit. This requires a source down low and a vent above. If you look at the installation manual from the manufacture they go so far as to require that the back of the unit be no more than 1 in. off the back wall, something Airstream can not do and it effects the efficiency of the unit.
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles