I check out the fire box calculator if I did it right this is what I need for my new pit.
The pit comes out to 72,000 cu. in., the fire box would need to be 24,000 cu. in.
Fire box is 1/3 of the pit.
That means my fire box would have to be 30" x30” x 26.7” holy crap.
I must have done something wrong.
My pit is 60”wide, 40”tall & 30”deep comes to 72,000 cu. in.
Hey son put these numbers into that calculator and see what you come up with.