room temp is 60 degrees or so .
What I also noticed is with the door closed , the static pressure of two fans actually turns the third fan into an intake fan !!
So I figure if I seal the room completely I can get two fans to work as intakes anyways as needed and the remaining four as exhuast.
I can also now run another six fans as needed down the line for a total of 18000CFM exhuast.
I calculated that with even six fans and 9000CFM using the 400/CFM per ton calc thats almost equivalent to a 21TON AC at a fraction of the install and ussage cost.
If it gets bad in the summer even with 12 fans I can throw in an EVAP cooler , so I should be set to max out my 600AMP service now
Thanks all for the tips , especially Phill.
I will post final pics when we complete the install.
That's a nice setup you have there man, congrats and well done on all the hard work getting it setup. It sounds like you should be doing pretty well for cooling and airflow now.