The 6 Inch Max Fan Pro Series is even more efficient and stronger than the original Max-Fan design.
These fans run quieter than the Max-Fan. The efficient and strong 6 Inch Max Fan Pro Series with 420 CFM boasts three-speed control and quiet performance. These compact fans have 120 volts AC power and 60 hertz. The PRO SERIES has a more robust housing due to the fiberglass-reinforced plastic compounds that meet all of the UL and CSA requirements. The Max-Fan PRO SERIES 6 inch includes an EZ Mount™ Bracket.