I have pretty much completed converting this very old refrigerator into a smoker. I want to share what i did and get some advise neg or positive. My refer is all metal and pretty small the box(inside measurements) is 20 inches wide, 13 inches deep and about 40 inches tall. i have a vent on top thst a metal duct that opens and closes 4"x6", i have air inlet at the bottom 2"x6". my heat source is a small bbq grill gas element, i punched a hole on the side of the refer big enough to slide the smaller part of the gas element so that the control is outside the box and the element is setting inside resting on the bottom of the box I tested it last night and its easy to control the heat and with a pie pan i put chips and covered with foil and poked a few holes in it. the test was good alot of smoke, any thots?