I hope I am putting this in the right section.
I have a trailer pit. The cooking chamber has a hexagonal shape to it (6 sides). It is 48' long by 36" wide. I am not sure how tall it is though. The firebox is a similar shape, but is extremely in efficient. I am looking to build, or have someone build a new insulated firebox. I am having trouble trying to figure out was size it needs to be though. I look at most pipe smokers and no matter how long the cooking chamber is, the firebox is almost always 20" x 20". I contacted a fabricator today and gave him a rough idea of what I want, but the size is still baffling me. Can anyone assist?
Chief cook for P B & j's BBQ Team/Dubbed "Skippy" By the legendary Mike Davis