Quote Originally Posted by LukeXE
I just have quessed that when I clicked "Submit Reply"

I edited my last post a little bit, I will copy that text:

"And other idea is that if fan are pulling then air is pulled by ALL the fins (of course of you have shroud), so it`s more efficient."
Ahh, I see. So if no shroud was used, there would be no difference really in efficiency?