Opinions on ex. fans wanted

[Lowdog]

I need to get an exhaust fan for a 1000k, air cooled light. The intake air in summer will be 75-80 degrees. Lower in winter. Ive seen people recommend everything from 150 cfm up to 760 cfm for a 1000k, which is a huge range...from wont work to overkill. Does anyone have an opinion on size, and equally important, maker of a good fan.
Thanks
Ld

 

[JJ Bones]

I would go with the 6" Max-Fan because it has a built-in speed controller, is small and quiet. I recommend 250 CFM per 1000w. With the Max-Fan you can run at 334CFM on 100% or 264CFM at half speed.