We have a '09 8280WS 5th wheel. The filter is located behind a cabinet left of the frig. It is behind the door that has hinges on both sides. Also located there is the water pump and the back end of the water heater. Ours did not have the filter installed by the factory, it was located in a drawer.
Now bring back the Constitution.
Proud parent of a U.S. Soldier!
2009 Rockwood 8280WS
2004 Chevy 2500HD Ext. Cab 4X4