Thanks for your quick reply John, Ok, would i be able to cool each row with 7 fans, and then duct all the 8" fans into a large 20" duct running down the side of my room to the outside? I would love to run two very large ducts down both sides of my room so i can intake & exhaust all the hoods fans from those ducts so i need only two 20" holes for intake/exhaust for air cooling my hoods, instead of 14 8" holes if you catch the drift?
Also, have you heard anything about the max can fan 20 inchers? It's almost 1500 for the one fan, but its rated at 4600-4800cfm & is quiet due to low engine RPMs (1500-1700 rpms i think.) So i was gonna buy two of these, one for intake & one for exhaust.
My other route would be to buy four 14" max can fans that are rated 1700cfm & then maybe get 50k btus worth of cooling instead of just 24k.
(On a side note, i have a 24k btu mini split cooling the area in the shed, that is outside of my room for where the ballasts & back of my window unit A/Cs will be etc.)
Thanks for your help again, i'm just trying to figure out the most cost effective & efficient cooling system without using a bunch of mini-splits, and least amount of holes lol.