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Main image of 4 Inch Compact Inline Duct Fan with Humidity & Temperature Sensor, 6-Speed Controller Quiet Exhaust Fan with DC Motor Ventilation Fans for Grow Tents, Bathrooms, Duct Booster Systems, Boat

Alt view image 2 of 7 - 4 Inch Compact Inline Duct Fan with Humidity & Temperature Sensor, 6-Speed Controller Quiet Exhaust Fan with DC Motor Ventilation Fans for Grow Tents, Bathrooms, Duct Booster Systems, Boat

Alt view image 3 of 7 - 4 Inch Compact Inline Duct Fan with Humidity & Temperature Sensor, 6-Speed Controller Quiet Exhaust Fan with DC Motor Ventilation Fans for Grow Tents, Bathrooms, Duct Booster Systems, Boat

Alt view image 4 of 7 - 4 Inch Compact Inline Duct Fan with Humidity & Temperature Sensor, 6-Speed Controller Quiet Exhaust Fan with DC Motor Ventilation Fans for Grow Tents, Bathrooms, Duct Booster Systems, Boat

Alt view image 5 of 7 - 4 Inch Compact Inline Duct Fan with Humidity & Temperature Sensor, 6-Speed Controller Quiet Exhaust Fan with DC Motor Ventilation Fans for Grow Tents, Bathrooms, Duct Booster Systems, Boat

Alt view image 6 of 7 - 4 Inch Compact Inline Duct Fan with Humidity & Temperature Sensor, 6-Speed Controller Quiet Exhaust Fan with DC Motor Ventilation Fans for Grow Tents, Bathrooms, Duct Booster Systems, Boat

Alt view image 7 of 7 - 4 Inch Compact Inline Duct Fan with Humidity & Temperature Sensor, 6-Speed Controller Quiet Exhaust Fan with DC Motor Ventilation Fans for Grow Tents, Bathrooms, Duct Booster Systems, Boat

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4 Inch Compact Inline Duct Fan with Humidity & Temperature Sensor, 6-Speed Controller Quiet Exhaust Fan with DC Motor Ventilation Fans for Grow Tents, Bathrooms, Duct Booster Systems, Boat

[6 Speed Control]: 6-speed manual speed control and intelligent automatic on/off. In manual mode, you can select different gears as needed to meet diverse ventilation requirements; in automatic mode, it dynamically adjusts the on/off status based on real-time temperature and humidity. Equipped with the "SPEED+/-" buttons on the remote control, it allows for convenient gear switching with intuitive and efficient operation.
[Compact 4 Inch Inline Duct Fan]:Short-body 4 inch inline duct fan with compact size (4.72 × 3.86), suitable for limited installation space. Provides reliable airflow as an inline fan, duct fan, and air duct fan.
[Automatic ON/OFF Sensor Control]:Built-in humidity and temperature sensor automatically turns the fan on or off based on environmental conditions. Functions as a practical ventilation fan and exhaust fan for grow tents, bathrooms, basements, and fresh air intake systems.
[Quiet DC Centrifugal Motor with Speed Control]:Equipped with a high-efficiency DC centrifugal fan motor for stable airflow and low noise. 6-speed controller allows manual airflow adjustment to meet different ventilation requirements.
[100% Pure Copper DC Motor & High-Efficiency Airflow]:Featuring a 100% pure copper DC motor, this inline duct fan spins at 1450-5000RPM with <20K temperature rise. Compared to aluminum motors, its 30% better heat dissipation and 50% lower energy use make this inline exhaust fan durable and reliable for heavy-duty needs.

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