Not Ranked
I think I have the standard SPAL AP 70 fan which I think is the standard. The heavy duty fan (SPAL AP71) pulls about 200 more cfm. In 90 degrees and in traffic I might get to 200 degrees and would like to have just a little more air flow for insurance. The aluminum cools fast once I get moving and I generally stay right at 180. I am thinking another 200 cfm will be perfect.
Phil
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