Name: EC Motor Inline Duct Fan, 4-8 in
Brand: Weltech

EC Motor Inline Duct Fan, 4-8 in

High-Efficiency EC Motor: Features a three-phase PWM EC motor for high static pressure, low power consumption, and long operational lifespan.
3 Duct Size Options: 4 Inch (214 CFM), 6 Inch (405 CFM), and 8 Inch (Up to 831 CFM) configurations.
3 Speed Controller Variants: Choose from 0-100% Stepless Knob, 10-Speed Electronic Controller, or Smart WiFi App Controller with temperature/humidity programming.
Whisper-Quiet Operation: Aerodynamic mixed-flow design maintains low noise levels (27 to 51 dBA).
Wide Voltage Compatibility: Supports global standard 110–240V AC (50/60Hz) input.
Versatile Applications: Purpose-built for grow tents, indoor hydroponics, basements, and commercial HVAC ventilation.

The EC Motor Inline Ventilation Duct Fan provides high-volume airflow and precise climate regulation for indoor grow tents, hydroponic gardens, and residential/commercial HVAC systems. Powered by a three-phase PWM EC motor, it delivers robust airflow while remaining highly energy-efficient and quiet.

Key features

Indoor Agriculture & Grow Tents: Exhausting heat, humidity, and odor; supplying fresh intake air for cannabis and horticulture.
Residential Ventilation: Improving air turnover in basements, attics, workshops, and bathrooms.
Commercial HVAC Systems: Boosting airflow in long duct runs, server rooms, and storage areas.

Specifications

Parameter	4 Inch Fan	6 Inch Fan	8 Inch Fan
Duct Collar Diameter	98 mm (4″)	147 mm (6″)	198 mm (8″)
Motor Type	Three-Phase PWM EC Motor	Three-Phase PWM EC Motor	Three-Phase PWM EC Motor
Rated Voltage	110–240V AC, 50/60Hz	110–240V AC, 50/60Hz	110–240V AC, 50/60Hz
Power Consumption	30 Watts	60 Watts	70 Watts / 180 Watts
Airflow Volume	212 – 214 CFM	402 – 405 CFM	553 CFM / 831 CFM
Max Speed	3000 RPM	3000 RPM	3000 RPM
Max Noise Level	27–28 dBA	31–32 dBA	50–51 dBA
Power Cable Length	1.5 Meters	1.5 Meters	1.5 Meters
Control Cable Length	2.5 Meters	2.5 Meters	2.5 Meters