I am Beth from El Paso and I am hoping someone here can shed some light on proper firebox size. Our back fence (brick and stucco) had a built in BBQ/fire pit that is lined with fire brick. We want to convert it into a smoker with a side firebox. Is there a ratio or some formula to use to determine how large the size of the box and the opening into the cooking area should be?
Any help you can provide would be very much appreciated.