18.
This is the top half of the new head. That drippy shower nozzle that comes with RVs is gone. This one shuts off the water completely when the temperature valve is pushed in, not turned left or right. That way the temp doesn't change while off during lathering. This was the only one like it at Home Depot. All the others they carry are 'anti-scald. (Lawyers, you know)
Instead of posting a photo of a toilet, I'll just say that because of the new LectraSan, there are now only two hoses needed to work the toilet. One in and one,,,:) The beam next to the toilet has four un-used holes now and no transfer pump. Time for more 'Starboard'.