VIVOSUN M4 4Inch Inline Duct Fan 195 CFM Ventilation Fan with EC Motor Adjustable Speed Energyefficient Vent Blower for HVAC Grow Tent Hydroponics

Efficient and Quiet Ventilation The PWMcontrolled EC motor and mixedflow design deliver powerful quiet and energyefficient performance Operating at 2800 RPM this fan generates 195 CFM of airflow with low energy use and a noise level of just 28 dB Adjustable Fan Speed PWM control enables precise and easy speed adjustment to suit your needs Simply turn the knob to select from three speed levels and set the fan to your desired speed effortlessly Safety Protection The ETLlisted EC motor includes an automatic reset function to prevent overheating and ensure safety With lockedrotor protection the fan cuts off power and resets automatically if the blades are blocked The flameretardant electrical junction box enhances fireproofing Simple HookupIntake and exhaust flanges with locking tabs make vent hose connections quick and secure The 59 ft cord provides flexible setup The detachable housing impeller and blade simplify cleaning and maintenance Versatile Applications Efficiently exhausts stale air supplies fresh air and boosts airflow to balance humidity regulate temperature and improve air quality in grow tents grow rooms basements or other spaces