Thanks so much for the advice. Could you give me some tips on creating an air funnel? Something I'm wondering if I could cover a rack in polystyrene foam, then attach a inline fan duct for intake and also for exhaust, maybe create a loop that intakes air from outdoors at the bottom of the rack, and exhausts hot air back outdoors at the top of the rack. I have no experience cooling things like this so no idea if this is even a workable idea lol.