Well, i found another one of the smokers I bought, a Grillpro as i find out now, and am contemplating buying it for extra grates and such. The thought also came to mind that i could add another center section to the stack for some more capacity, but am not sure if that would really work. In my mind, I can't see why it wouldn't work, since its still sealed well and its only more air to heat once. I would figure that it would take a bit longer to reheat after spritzing and such, but I could live with that. What do you guys think?