Good; thanks for the quick response. Guess I need to spend time on it.
The issue is that, if I mount it flat against the breakfast nook right inside the door, I have to mount it so close to the outside wall that the hose gets squashed (and the local fire safety supply place recommends against that, because it could get damaged). There are things in the way of moving it sideways. But, if I make a tapered cleat, I might be able to swivel it, and mount it at an angle to free up the hose.
These things never quit offering us challenges, do they?