There is a thread on TSP on this subject, and I have posted pics of my modified Dixon Toaster, which works well.
http://www.trailersailerplace.com.au/ph ... 171#p88171
Ventilation by propped gap under bottom hatch, and slightly open horizontal sliding hatch at the top.
Cabin Heating
Cabin Heating
Ian B
Ex Investigator 563 #50 Yara
Ex Investigator 563 #50 Yara