yea i have a fan pointing in my to strengthen my plants stalks...make the more sturdy and cool my lights kuzz i have 15 cfls ina small box...thats why i suggest just cutting a hole big enough for the fan face to fit in and then you can put it in the hole and cool everything at once]...then a hole for vent like try 1 3'' or 2 2'' i just have a big like vagina shaped 1 kuzz mine is a tent ...