Rubber pads with steel threads to absorb vibrations and noise
95 CFM from advanced blade design that produces excellent performance
Silent and long life POM (Polyoxymethylene) Bearing
Includes two silent mode adapters to fix the fan speed at 1600 RPM (28 dBA) or 1200 RPM (19 dBA)
Smart Fan Engine - High efficiency motor, Low starting voltage, Fan-jam protection, Auto-resume after blade obstructions are cleared, Dust & water resistant, Polarity proof