There are certain factors that you can consider while investing in a long-lasting and efficient drum smoker. First, make sure that the size and overall dimensions of the smoker fit into the place where you will store it. Look for an easy to assemble and disassemble smoker with the right size. Secondly, the cooking space must be appropriate.nnIf you are planning to smoke meals for up to four people, then a small 16-18 inch unit will do the job. Most smokers come in 16 inches to 22 inches in diameter and offer 400 to 1,000 sq. in. cooking space. Your selected dum smoker must be equipped with a good airflow system. It can have multiple adjustable dampers to regulate heat and smoke.