yea it would make loads more sense to have the intake at the bottom but then i cudnt open the grow room door, plus if u look in that photo (in the 3rd post) theres another door to the left that swings open clockwise. its why iv had to think about it lol. yea the space is small its bout 70 inch square. the only other way i thought bout doing it is maybe growing stocky plants and having a shelf inthe middle so i can grow twice as much but id have to get another light.