I'm in the process of building a fridge smoker right now and just wondering for all of you that have one, how hot does the outside of the fridge get when you've been smoking for hours on end? The reason I am asking is because i'm wondering if i need to buy high temp paint for the exterior or if i'll get buy with automotive paint that i have! I have about 2.5 to 3 inches of insulation in my build! Thanks