Exhaust fan for 2,000w system

Hi,
I am looking to buy a fan to suck out the heat out of the room through the window. I have 2,000W system and wanted to know if "Can Max Fan 6" 201, 264 & 334 CFM" is what i need or is there another fan that is suitable for my purpose.
Thankyou.

http://www.ebay.com/itm/6-Inch-530-CFM-Inline-Duct-Fan-Booster-Vent-Hydroponic-Blower-Heat-Exhaust-Cool-/280743267307?pt=LH_DefaultDomain_0&hash=item415d9a4beb

The best fan I have ever used and I have used almost everyone out there. Produced in the USA by people that make fans for a living, not repackage fans marked-up for the indoor grower market.

I currently have 5 of them.