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VIVOSUN 4-Inch Inline Duct Fan with EC Motor

VIVOSUN ★ 3.7/5 · ItemOracle Score Budget

$40 USD
Price subject to change
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VIVOSUN M4 4-Inch Inline Duct Fan, 195 CFM Ventilation Fan with EC Motor, Adjustable Speed, Energy-efficient Vent Blower for HVAC, Grow Tent, Hydroponics

Inline duct fan with PWM EC motor delivering 195 CFM and adjustable speed for quiet, energy-efficient ventilation in HVAC, grow tents, or hydroponics. Users note solid fan quality and effective heat transfer, with mixed opinions on noise level

Highlights

  • EC motor with automatic overheating protection
  • adjustable speed for precise control
  • low noise designed for quiet ventilation

Pros

  • PWM-controlled EC motor
  • 195 CFM airflow
  • adjustable speed via knob
  • low energy use
  • quiet operation

Cons

  • noise level considered noisy by some users
  • mixed feedback on quietness

Best For

  • grow tent ventilation
  • hydroponics airflow management
  • HVAC ducting
  • heat transfer exhausting
  • energy-efficient cooling
  • noise-conscious installations

Features

  • PWM-controlled EC motor delivers 195 CFM at 2800 RPM with 28 dB noise
  • Three-speed adjustable control via knob for precise airflow
  • ETL-listed motor includes automatic reset and locked-rotor protection
  • Flame-retardant electrical junction box enhances fire safety
  • Intake/exhaust flanges with locking tabs, 5.9 ft cord, detachable housing for cleaning

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