I had the 22” when I lived in Texas, moved to New York for a while and gave to a friend. He got me the 18” once I had a yard again since the shipping would cost so much. It was nice for the rare occasion that I wanted to cook a full rack of ribs or like multiple turkeys. For a single butt or brisket though it used so much coal even with the ring method. No upgraded door, I just buy a bunch of ends and pieces, put em in my cast iron, crank the vents all the way open and coat the inside with fresh grease while I’m seasoning my pan.