Here is the FAN - FILTER which I purchased
http://cgi.ebay.com/4-INLINE-FAN-CARBON-FILTER-COMBO-ODOR-CONTROL-SCRUBBER/300391321952
190 CFM - Vortex blower, I use it with a speed controller.
This really cools my reflector. I an running a speed controller at the lowest level, because it is cold here at the moment. Then I can crank it up if needed.
The guys above ships from El Monte, CA. There is another vendor who ships from Pittsburgh PA. This could save you on shipping and also if you have an issue with the purchase.
Happy with mine