vent question best answer gets rep

if you have a fan in your grow room wiv a vent in the room do you need a fan ventellation one our is it the same thing but better an is the air suppose to get suked out of the room?

i'd give you a rep if you would get hooked on phonics

While it is recommended to have an exhaust fan, i guess it wouldn't be completely necessary to have one if you have a fan inside the box and a vent to draw in fresh air.

Give us some more info about it. Box dimensions, lights, watts, what kind of fan is it?

And try using grammar, punctuation and complete sentences if you want more help...

it sounds like he's in a room, not a cab. if you're in a room, good circulation is important. don't need to vent out if you have access to fresh air. depends on many things. if you're in a cab, use a passive air intake via your exhaust fan.