Hello I was wondering if there was someone on this forum who could help me with this. Basically my question sums up to this: There are 2 fans with equal size/power/cfm. Air must exit a 6" hole. Which design would produce the best CFM (Cubic Feet per Minute) of air flow? I have attached a picture of the designs a colleague and I were conflicting on. We are also open to any other suggestions for best possible CFM. Thank you!