Another idea is to run the AC inside and just let the heat it blows out to blow inside the box.. making it truly sealed. But wouldn't that negate the cooling the AC would be doing? Cool air out and hot air out? And these things REALLY do push out some heat too. I just don't know if that would be effective at all. If y'all think it would be worth it.. lemme know. Cause that's a possible viable option if the cool would take out the heat it puts out.