It appears my heater is bolted directly to thelp wall/closet.
I am replacing the catalytic heater with a small wall mounted electric heater for winter camping on hookups.
I have small children and I do not like the idea of exhausting the fumes inside the cabin. I also feel having to keep a window open defeats the benefits of such heater.
As far as electric heaters I am now looking at the Seabreeze SF14TA "Off the Wall" Outlet Mountable Bed/Bathroom Heater or something similar.
I also plan to install a Propex LP heater under the dinette bench for camping without hookups.