Originally Posted by pman777
There are 4ea 7/8 inch holes on the Weber lid. I won't stake my life on this but I believe 4ea 7/8" holes are a larger area than 8ea 1/2" holes.
Norco said 8ea 1/2" holes are plenty and I imagine he would know.
You're right. 4 x 7/8" holes on the Weber gives you 2.4 sq inches total where 8 x 1/2" holes gives you only 1.6 sq inches total.
I'll be experimenting with a diffuser as well, using a pizza pan.