Quote Originally Posted by Bob F.
One simple way to make the dry side is to use kitchen units. Screw them together to make the run. Pull them 9" or so away from the wall. Put a 2x2" batten along the wall at the same height. Screw a 2'6"" to 3' wide counter top to the batten and to the units which ties it all together solidly.

Put stop-valves in the pipes just as they come above the floorboards to allow you to shut the water off if something springs a leak.
Bob,
I really like the idea of the kitchen units, I had not thought of that, but it's the "batten" thing that I'm unclear about. I think you mean just a 2x2 to mount the couter top to for stability. And the "stop valves", another good idea that I had not thought about. Regarding the fan, I plan on installing a louvered light tight vent in the door so that air can be drawn into the room when the exhaust fan is running.