Originally Posted by
Bob Harper
Six inches from draft hood
Twelve inch rise off hood min.
Meaning, if I have it correctly, the 6" clearance from the draft hood extends up 12" from the draft hood.
Where do you measure that 12" vertical from the draft hood at: a) the flange at the bottom (the wide part); b) the top where the B vent goes; c) the 12" follows the shape of the draft hood?