Yes, i guess the theory is that if we look at the hot air and force it to the top of the smoker creating "pressure" the heat should flow across the center of the pit "laminar flow" with the best heat being at grate level "center" and the release of the pressure out the exhaust stack hence, grate level exhaust hole. Creating a non-turbulent environment.
But im no farking engineer, just guessing here...
engineers assume it works on paper... I make it work. :)
Custom 30x60 Offset Trailer
Char-Giller Pro Offset
Kingsford Barrel Grill
Smok'em if ya got'em