How Big Are The Holes In Your Scrog Screen?

How big are the holes in your scrog screen? I've heard people using 1"x1" holes and I've heard of 4"x4". Which is better? 4x4 seems to big and 1x1 seems to small. I was thinking 2x2, but this will be my first scrog. If someone with more scrog'ing experience would shine some insight into this thread I would be might grateful. Thanks.

I made my own scrog screen from bamboo tomato stakes. 2" x 2" is what I used and it worked well.