I went with a different idea where all of my cabinet space is connected together for the most oart and all I did was create a positive warm air flow through the inside of the cabinets.
I installed those small black plastic round vents from LOWES between all of the connected cabinets and this allows warm air to flow from one point through all of the cabinets.
I did add a thermostat controlled 12VDC axial fan that will come on when needed to pull the warm air from the inside of the trailer thru all of the interior of the cabinets.
I really haven't to run this out in the cold woods areas yet but it does circulate the warm interior air thru-out all of the cabinet spaces just fine. I think it will work great for me. Got this idea from Painotuna on here I think it was... I am hoping this will be more automated than just keeping some of the cabinet doors open when needed.
This also helps circulate the warm air that was being developed around my on-boar converter/charger unit.
Roy Ken
My Posts are IMHO based on my experiences - Words in CAPS does not mean I am shouting
Roy - Carolyn
RETIRED DOAF/DON/DOD/CONTR RADIO TECH (42yrs)
K9PHT (Since 1957) 146.52M
2010 F150, 5.4,3:73 Gears,SCab
2008 Starcraft 14RT EU2000i GEN
2005 Flagstaff 8528RESS