How I can make a cabinet door with a seal on it, to keep an air temperature inside the cabinet different from the room temperature?
From contributor A:
You could mount some steel strips on the back of your door, making it look nice if you need to. Then using a magnetic seal similar to one found on a refrigerator,like the Pemko 351 CM which is for meeting door seals but could be adapted. This would give you a good seal so that you could have separate temperatures efficiently.