For sale: travel trailers / lakewood, nj description: 2015 Airstream International Serenity 19c oyster ultraleather interior, many options stock#10318 msrp:$65,591.00 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: 24 black water tank capacity: 18 grey water tank capacity: 21 # ac units: 1 ac specifications: 13.5 btu payload capacity: 677 hitch weight capacity: 550 interior color: oyster ultraleather/ asain sand exterior color: silver