Roof-Mounted attic fan

Well, I purchased my attic fan today.  I went with the smallest fan it states it is for 1600 sq ft attics.  I am not sure why they do not go by cubic feet.  My equipment room is about 220 sq ft.  It was $54.95 and if it does not cool well I could add another I guess.

I need to get a larger ladder because I am a wimp and am afraid I will not be able to get back off the roof.

Also, it was hot today.