[Chester Stone]

Russ, it is a RVComfort..PHP, Coleman-Mack, model 6535A336. The specs. state that it is a two stage heat pump wall thermostat, supplied by Newell. Mine is mounted is the same place as yours, and the screw holes allowed me to mount it in same place, but a little of the box extends over the curved end of the post. If you want, I can photo the area to verify it is the same. I worked out a wiring diagram with Dwight at Newell, and posted it here.