Draft opening size

[BarrelBoiler]

hi

how large, in sq inches, should the air inlet be with a 6 inch stack??

running a 2x3 divided flat pan

thanks for the help

[chasesugarbush]

I have a barrel stove within a 2x4 ish pan I cut 3, 2"x11" holes one on each side of the fire box and one in front under the door. I get excellent draft with the 6" stack 15'

[bowhunter]

A Leader half pint evaporator has a 2 x 2 3/4 pan and a 6 inch stack. The air inlet is about 3 x 6 or 18 square inches.