exhaust fans

Looking for suggestions on ventiativen my 15.5x17.5x7.5 grow room that has two doorways and one window. Also I'm trying to do this as inexpensively as I can... Is there an exhaust/intake fan window kit or something along those lines ? My room can get high humidity throughout the day and I've...

Hey guys; I'm new to growing and i'm about half way though building my very own grow room! So excited! However i have no idea what fans i should get, I'm tight on money and i was hoping i can cheap out on exhaust fans, but using the very best carbon filter, lights, ETC. The Grow room is the...