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Looking for a new DC ventilation fan? Backwoods is now manufacturing, here in the USA, a brushless 16 inch, 12/24 V ventilation fan. Our fan is designed to meet your needs every season, either in the greenhouse or as an attic install. Intended for use with 12 volt or 24 volt solar panels as low as 30 watts up to 280 watts and can be used in conjunction with 24 volt battery banks. It will also perform with 285-300 watt, 72 cell modules with open circuit voltages of 44 volts. The SF16 is protected from moderate over-voltage and thermal fluctuations. The Super Fan has been tested through a variety of panel and voltage configurations. We recommend three configurations for “small”, “medium”, and “large” applications. “Small”: all 12 volt panels; a 30 watt solar module will provide an airflow of about 9 mph. “Medium”: a 60 watt will produce up to 17 mph. “Large”: a 135 watt or larger solar module will hit 18 mph and faster. The best thing about our new DC Super Fan is the brushless motor. Motor brush replacements were common on previous fans especially if they were run at high RPM’s. With no brushes the SF16 will outperform other fans. Solve your circulation issue with this solar direct solution!