Originally Posted by spareheat
Round holes are fine but aren't good for controlling flow. A slot will provide better control.
Thanks. Yes, I realize 3 round holes in a row will not be continuous as far as gauging air flow with a single sliding door. A slotted vent as you say will be easier to gauge. But on the other hand, temperature control when things settle will be made through just one 3/4" hole, not two or three holes, as those will be completely shut for the remainder of the cook.
This is something for me to think about tonight, whether to use 3/4" holes or a long narrow slot. I can go either way. I like the slot idea now that you brought that up. I was going with 2 or 3 holes simply because it was the easiest to do.