through a "doggy door" style frame i made to put into my Arcadia door. it is thee only way. i have tried 3 other ways. i live in a townhouse with a flat roof, so there is no attic, just straight insulation. i have thought about blocking off duct work, exhausting out bathroom, exhausting into house, none of those methods will work for me. and after trying everything else this is the only way i can get it to work. i know that in the winter i will be golden as that room never gets above 68. and im not positive about this yet, but i may not even need the portable a/c at night. so in the winter i should be cool to run my 2 1000w lights at full bore. until then im highly restricted and limited to what i can and can't do. i have thought about caulking the frame into place, but encase there needs to be a repair or some kind of maintenance, i can slip the frame out and shut the Arcadia door and it looks like nothing is being done. honestly man, im all ears. if you have a suggestion around that, then please tell me. i also have a huge gap under the bathroom door in that room. which sucks in air from some where. that in itself is an easy fix, but that is just one of the many leaks i have been dealing with. going from 90+ to 75 is a major improvement, imo. like i said in the winter i shoudl be fine. oh and 1 more key note. the IDEAL-Air unit has the ports that i can port right into the tent. and i know that i can hook the ductings up properly enough that it will work exactly how it is designed. all it does is take 75-80 air and make it 20 degrees cooler. in the end it will go from 75 to 55, then the ambient air will be 50 degrees. if the tent is sucking in that cool of air, or i can push cool air into the tent, then i know the lights can go full bore. i may be able to get away with the smaller unit. but the smaller unit only has 1 port on it. im getting it mainly because i can port it straight into the tent. and with the lights cranking out 3,000 BTU each, that is only roughly 3x the amount of BTUs. and in the winter i can exhasut the a/c into my living room and BAM! save a few bucks on heating the house. so, it could save me a few bucks in the cooler months. and about the dehumidifier...ive never had an issue with it being too humid. not in the desert. if, and i use the if to be positive, it rains we may get a little bit of humidity. but i have never had issues with any high humidity issues.