The smokerbuilder pit calculator will figure a rectangular build. The Fb is 107% of the recommended size so it's right on the money, the calculator calls for a throat of 284 sq inches. The BP gap is the same as the throat or up to 75% smaller, I haven't built one with that tight of a BP gap so I don't know how it would perform. I have built mine the same as the throat and haven't had any issues but I'm working on an adjustable BP gap on my current smoker that will range from 50% - 100% of the throat so that I can do some testing.SAFETYHARBORREDNECK wrote: ↑November 20th, 2019, 5:18 pmAny calcs for square box smokers?
A friend is building a reverse flow and was wondering his FB to CC throat and throat at end of BP.
64Lx37Wx42H with a 30x37x32 firebox.
TIA