Hey there I'm a pipefitter here in chicago who built a small smoker last year out of a 120# propane tank. This year decided to go a little bigger so I got a piece of 30" pipe 6' long. Saddled 2 20" pipes on it for separate fire boxes. Now I'm going to section the cooking chamber into 2-3' long chambers so I will have the ability to run two separate temps at yhe same time. Gonna put this baby on a trailet and go.