Entire unit is 22" X 22" X 28" plus the height of the wheels.  The inside angled square is 16" offset to fit the bottom of the keg.

170,000 BTU Metal Fusion burners

 Igniter holder had to be created.  We used angled aluminum

Grounding wire was soldered to igniter inside wood then run to angle iron 

Propane/air mixture should be set so the flame is blue.

One completed burner assembly