This was on a 28”x28” scrog, two SD on a 2”x4” wire screen from home depot, garden center.
I just harvested this one that had 3”x 3” squares, pvc with string.
I have a ton of respect for a lot of folks here that scrog and or just grow naturally. I try to look at it as a preference. In my situation, I look at the plant and try to decide what’s best for the plant. Meaning, one scrog might be one size and another plant, another size.
Everybody has their preference which you’ll decide what’s best for you.
I tend to like the 3x3 only cause I felt like the 4x4 was too big. But it might work for you. It does for some folks. And like @BobbyDigital a 2x2 might be better.