4 600 watt lights help me design room

hello to all my fellow growers - i need help big time.
i have a new room that i just finished the build out for
i plan to use 4 600 watt hps ( air cooled)
I need help to to set up the airflow for the room.

the size of the room is 14' long by 9'wide and 7 ' high

i need to vent the air up thru the roof of the building which is 14' above the
7' room
i am planing to treat the air first with ozone then carbon filter - i have built out a seperate room to do this
my question is what size fan do you think i need to vent the air ?
i plan on venting thru a 8" pvc pipe tru the room above and roof (14ft)
thank you - ninjaboy

some pics for ya -this is lung room

I would do one 6" inline fan (around 450 cfm) per two lights, and just have a carbon scrubber at the begining of each run. You can make a carbon scrubber for around $30. The inline fans are around $170. Add in some ducting, hose clamps and adapters and you you could do it all for around $500. If noise is an issue you can always use insulated flexible ducting, and also insulate your inline fans. You can cut the noise down to almost nothing. Noise really bothers me. Even if you are legal who wants to have to talk over the noise. The extra $30 or so is worth it to me. Your room is great. I can't wait to see this thing up and running.

thanks for the response -my problem is that i only have 1- 8 inch pvc pipe going from the room to the roof vent (14ft)so i need to push the air tru the pipe then out -i will have a seperate room for the air to mix with ozone then out tru a carbon filter to the roof with a seperate fan -from my air room to the roof what fan do u recomend? also what size passive intake do you think i need?

Well you have 8" going out so why dont you do like I said before and then just have them go through a y to the 8" pipe. As far as the ozone generator you can get an inline one that is 6" or 8". So you could get an 8" and have it after your y adapter where your 2 6" meet up. That mixing room is not really necassary. However since you do have it i would insulate the fuck out of it and put my fans in there. Also something to keep in mind there have been some studies that Ozone exposure can cause cancer(just like verything else). I also read that Cali is suppose to outlaw any ozone making equipment for this very reason. I don't know how much of that is true or not,but i have always stayed away from the ozone generators. I get a bad vibe from them, and that was before I heard about the cancer shit. depending on the size you could use the little mixing room for a veg room. Just put some shelving in and you can have 3 tiers. Moms on bottom, cuttings next, and rooted next. Just my thoughts. I wish I had your room though. If I did it would take me ten years to figure out a set up I liked.

im thinking now about a sealed room

check out al b fucts get a harvest every 2 weeks.