I built a smoker out of a 1950's era fridge. I started with an electric heat source and it burned up the hot plate so I took an old table top grill and mounted it in the bottom of the fridge. I couldn't get the temp down low enough even on low. then I found an old camp trailer stove and took the oven burner from the oven pilot and temp senser and all built a burner box and mounted it under the fridge then mounted the four burner cook top to the side of the fridge. the smoker is thermostat controlled and will maintain temps from 120 deg to 450 deg. the unit looks like a real red neck contraption. Now I need to learn how to cook with it.