Quote Originally Posted by CS1983 View Post
I'd assume there could be some regulation of heat via opening/closing the vents, though I'm not sure how much regulation would occur.

I'm curious as to what you're doing that you'd need the thing to be going for 40+ minutes.
Oh yeah. In my picture you can't really see it, but there's a small vent with a piece of metal that you can rotate to allow more or less air flow as needed. You can also keep the ash removal door open for additional airflow as well.

As for the time needed, 40+ minutes is probably excessive, but after grilling the burgers I wanted to saute some zucchinis.