In the last month or two, a new name emerged from the void, that being the Everflow 60mm. This fan is reputed to churn out a fairly impressive amount of air, at a fraction of the noise rating of the Delta. None of these three fans has a CFM rating that comes anywhere near the Delta, except for the Everflow. Before beginning the article, I already had a fairly good idea as to what the outcome should be - I mean the specs are easily available from the manufacturers websites. Delta 7k .
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