inline fan question

i am going to be setting up my tent pretty soon, it is a pretty small one 2ft deep 4ft tall and 4ft wide.
I was just wondering how many cfm from and inline fan would be desireable for this setup, thanks!

Where is the tent going to be located? I have the same measurements... I keep my tent in the basement where it gets very hot! I bought a 206 CFM for heat suction and a 250 cfm duct booster for airflow.. and a 14 inch fan inside the tent to keep the air circulating. My temps are a steady... 74 -79 ideal for growing.. good luck!

Also whats the wattage of light your going to use? that makes a big difference in heat.

its going to be outside in my apt "backyard"
Im not exactly sure how the whole process of the inline fan works yet, do i want to be sucking in air from the outside in on one and switch for another? would you mind posting a few pics for me K06 because i think you posted in my other thread and i got the same exact tent as you. thanks!My sig is the grow that I am going to be moving outside into the tent. 400W HPS

Sure.. heres a vid... you can't see the whole tent due to the crappy video work but it gives you an idea how am ventilating.http://www.youtube.com/user/TenaciousKiM#p/a/u/1/YBmNkQXNYqQ

heres a pic.... like i said crappy camera work so am sorry the pic is'nt alot clearer... been using my phone.

This is all you need if your going to be doing it outside... since your going to be getting fresh air from every direction, this is all you need http://www.amazon.com/6-Inch-110VAC-250--Line-Duct/dp/B0007N5LI6/ref=sr_1_5?ie=UTF8&qid=1288831625&sr=8-5 like 3 of this.. 2 for sucking heat 1 for air flow and a regular fan inside for circulation. I have the same one.