For sale: class b / lakewood, nj description: 2015 Airstream interstate 3500 24'4" extended lounge **columbian walnut/oyster/white**, mercedes-benz turbo diesel, loaded out, stock#10161, true msrp: $152,445.00, lowest price guaranteed, we will not be undersold!!! For a full description, floor plans, features, specifications, additional photos and options for this Airstream please visit our colonial Airstream website: features: fresh water tank capacity: 26 black water tank capacity: 16 grey water tank capacity: 27 # ac units: 1 ac specifications: 13.5 btu interior color: columbian walnut/oyster exterior color: white