Old fridge with metal inside and heavy metal racks good. Older fridge with plastic interior and lighter galvinized metal racks BAD BAD BAD. Wood smookers work great with electrical cookers but it is a little harder to control heat when it gets to be a little cold out and they ocasionly burn to the ground with the heat set to high. A metal box with propane and you can cook a turkey in January if you want. The thought of a walkin brick smokehouse sounds cool...I wonder iuf the Wife would let me nahhhh
I was surprised how little fresh air my propane smoker needed. It only has a couple of 3/8" holes near the bottom that were there when we got it.