Fan help

[aussygrower]

Hi im new here. I have a question about the exhaust fan for a tent i plan on buying. The tent will be a 1.2 M x 1.2M x 2M. Where i live it goes down to about 10 degrees C in winter (inside), but can get to over thirty five degrees C in summer (inside) to. What i need to know which of the fans are more appropriate for me (matched up with a fan controller) to manage my temperature issues in summer. The average summer day here is 30 degrees C. So i want a fan which could easily deal with these real hot days here in aus. Ill be using a single exhausting fan through the top of tent and passively intaking through the lower ports. Ill be intaking the room air via a 200 mm duct in the wall leading to an open window. Ill be exhausting into a 200mm hole in the roof. Also ill likely be investing in a/c if good ventilation isnt enough to keep the tent cool, just after i test and get to know my 400W HPS. My first grow was outside and im trying to get some results inside. Cheers AG :smokin:

CAN MAX FAN 200MM 179 WATT CENTRIFUGAL NEW | eBay (http://www.ebay.com.au/itm/CAN-MAX-FAN-200MM-179-WATT-CENTRIFUGAL-NEW-/400211248285?pt=AU_Seed_Starting_Hydroponics&hash=item5d2e73049d)

NewAgeHydroponics.com | Systemair RVK200E2-L1 (http://www.newagehydro.com/shop/details.php?prodId=389)

http://www.exceldistributors.com.au/Excel-Aire/Fans/MIXED-FLOW-FAN

[aussygrower]

Anybody?? Does anybody have any info / links for dealing with stresses from heat in hot regions. Would be appreciated. Cheers