Best Inline Duct Fan 4 Inch in 2025
Updated on July 2025
#1
Recommended
30% Off
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- Fan speed of 2500 RPM generates airflow of 195 CFM for effective ventilation in grow tents and rooms
- Operates at a low noise level of 30 dB, minimizing disruption during use
- ETL listed motor with automatic reset to prevent overheating and flame-retardant electrical components for safety
- Easy assembly with locking tabs on flanges and a 5.9-foot cord; components can be detached for cleaning
- Suitable for enhancing airflow, reducing humidity, and controlling odors in grow rooms, basements, and kitchens
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- Fan speed of 2500 RPM generates airflow of 195 CFM for effective ventilation in grow tents and rooms
- Operates at a low noise level of 30 dB, minimizing disruption during use
- ETL listed motor with automatic reset to prevent overheating and flame-retardant electrical components for safety
- Easy assembly with locking tabs on flanges and a 5.9-foot cord; components can be detached for cleaning
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#2
Value for Money
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- Energy-efficient inline duct fan operates at 4500 RPM, generating an airflow of 130 CFM with a maximum power consumption of 6W.
- Designed for quiet ventilation in various spaces such as grow rooms, bathrooms, kitchens, workshops, basements, and attics to enhance HVAC airflow.
- Constructed from high-quality plastic for durability; allows for quick removal and simple maintenance.
- Includes a variable speed controller to adjust airflow and noise levels according to preference.
- Duct size: 4 inches; dimensions: 7.28 x 3.82 x 3.82 inches; voltage: 100-240V; air pressure: 165 Pa; noise level: 26 dBA.
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- Energy-efficient inline duct fan operates at 4500 RPM, generating an airflow of 130 CFM with a maximum power consumption of 6W.
- Designed for quiet ventilation in various spaces such as grow rooms, bathrooms, kitchens, workshops, basements, and attics to enhance HVAC airflow.
- Constructed from high-quality plastic for durability; allows for quick removal and simple maintenance.
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#3
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- Strong motor with permanently lubricated bearing for quiet and maintenance-free operation
- Compact 4-inch diameter design with 2930 RPM and 100 CFM airflow, suitable for tight spaces
- Balanced centrifugal impeller ensures low noise operation under 30 dB, minimizing work disruption
- Versatile applications including bathrooms, kitchens, basements, and grow rooms for enhanced airflow
- Specifications: 110/120V voltage, 14W power, with maximum operating temperature of 130℃ and ambient temperature of 60℃; immediate power off recommended if blades are obstructed
- Regular cleaning recommended after first week of use to maintain performance with connected carbon filter
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- Strong motor with permanently lubricated bearing for quiet and maintenance-free operation
- Compact 4-inch diameter design with 2930 RPM and 100 CFM airflow, suitable for tight spaces
- Balanced centrifugal impeller ensures low noise operation under 30 dB, minimizing work disruption
- Versatile applications including bathrooms, kitchens, basements, and grow rooms for enhanced airflow
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#4
8% Off
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- Powerful 2200 RPM motor operates quietly under 30 dB, enhancing indoor air quality without disruption.
- Versatile design serves as both an intake and exhaust fan, promoting effective ventilation and air circulation.
- Durable hard plastic construction with a user-friendly switch metal ring for straightforward duct installation.
- Suitable for various settings including residential and commercial spaces, grow tents, HVAC systems, and bathroom ventilation.
- One-year warranty provided with responsive customer support available 24/7.
- Note that increased wattage leads to stronger airflow and higher noise levels.
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- Powerful 2200 RPM motor operates quietly under 30 dB, enhancing indoor air quality without disruption.
- Versatile design serves as both an intake and exhaust fan, promoting effective ventilation and air circulation.
- Durable hard plastic construction with a user-friendly switch metal ring for straightforward duct installation.
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#5
10% Off
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- Powerful Airflow: This inline booster duct fan has a speed of 4500 RPM and can produce powerful airflow up to 130CFM, providing fast and efficient air circulation to help eliminate odors and keep the environment fresh and comfortable.
- Adjustable speed: The inline duct fan is equipped with an adjustable speed controller, allowing users to flexibly adjust the wind speed to meet the needs of different scenarios and provide a customized ventilation experience.
- Energy-saving design: This 100mm duct fan uses an advanced DC motor that consumes only 6W of power during operation, resulting in significant energy saving. Even at high speed, the fan operates with very low noise, making it suitable for home and office use.
- Easy to install: The ventilation fan is made of high-quality plastic, which is not only sturdy and durable, but also not easy to deform. Its simple design allows users to install it quickly and enjoy the convenience of efficient ventilation.
- Multi-scenario application: FanGoFast exhaust duct fan adopts compact design and is suitable for various environments, such as greenhouse, garage, basement, kitchen and laundry room, etc., which can effectively improve the ventilation effect and air quality of the room.
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- Powerful Airflow: This inline booster duct fan has a speed of 4500 RPM and can produce powerful airflow up to 130CFM, providing fast and efficient air circulation to help eliminate odors and keep the environment fresh and comfortable.
- Adjustable speed: The inline duct fan is equipped with an adjustable speed controller, allowing users to flexibly adjust the wind speed to meet the needs of different scenarios and provide a customized ventilation experience.
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#6
22% Off
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- Designed for diverse applications, this inline duct fan effectively exhausts heat, humidity, and smoke, enhancing airflow across various settings including air plant tents, hydroponic rooms, kitchens, and basements.
- Offers a robust airflow of 200 cfm, ideal for ensuring airflow and dehumidification in larger spaces, contributing to consistent clean air circulation.
- Operates quietly at only 29 dB, thanks to a high-quality AC motor, providing powerful performance without disturbing your environment, while also increasing energy efficiency by 30%.
- Features manual speed control for customizable airflow, allowing you to adjust ventilation levels to suit different environments effectively.
- Includes installation essentials such as hang-up slings and non-vibration rubber mats, simplifying the setup process and allowing for versatile mounting options.
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- Designed for diverse applications, this inline duct fan effectively exhausts heat, humidity, and smoke, enhancing airflow across various settings including air plant tents, hydroponic rooms, kitchens, and basements.
- Offers a robust airflow of 200 cfm, ideal for ensuring airflow and dehumidification in larger spaces, contributing to consistent clean air circulation.
- Operates quietly at only 29 dB, thanks to a high-quality AC motor, providing powerful performance without disturbing your environment, while also increasing energy efficiency by 30%.
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#7
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- Efficient Ventilation: The AeroZesh S4 has powerful performance with airflow at 208 CFM to create optimal ventilation for your grow space; A PWM controlled EC fan with mixed-flow design that is fully adjustable and responsive to the environment
- E12 Speed Controller: Ten fan speeds controlled by PWM can be selected by you; Turn off and then on again, backup memory can remember the speed set before the last shutdown; Three ON/OFF cycle mode can achieve the cycle of wind speed to save power
- Entirely Programmable: You can upgrade the E12 fan controller to an E42A multi-device controller for more functionality; The GrowHub controller can be integrated with the App system for intelligent remote control of remote automation via the App
- Temperature & Humidity Control: This device is ideal for controlling temperature and humidity with its powerful airflow and quiet 39dB operation; It helps you maintain the right balance of humidity and temperature for your plants, creating a healthy and optimal growing environment
- Optimal for Indoor Growth: Ultra powerful and adjustable, the AeroZesh can be used in various sized rooms and is the center of your ventilation system; Equipped with a long power cord for easy installation, it can be hung anywhere in your tent easily
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- Efficient Ventilation: The AeroZesh S4 has powerful performance with airflow at 208 CFM to create optimal ventilation for your grow space; A PWM controlled EC fan with mixed-flow design that is fully adjustable and responsive to the environment
- E12 Speed Controller: Ten fan speeds controlled by PWM can be selected by you; Turn off and then on again, backup memory can remember the speed set before the last shutdown; Three ON/OFF cycle mode can achieve the cycle of wind speed to save power
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#8
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- Strong airflow of up to 130 CFM for enhanced ventilation across various spaces like grow tents, greenhouses, and kitchens.
- Upgraded EC motor for efficient performance, minimizing energy use and extending the product's lifespan.
- Operates quietly at 26 dB(A), ensuring a non-disruptive atmosphere for daily activities.
- Durable construction featuring ABS plastic housing and PBT blades, designed to resist deformation.
- Safety features include a wide voltage range power adapter and stall protection to prevent hazards.
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- Strong airflow of up to 130 CFM for enhanced ventilation across various spaces like grow tents, greenhouses, and kitchens.
- Upgraded EC motor for efficient performance, minimizing energy use and extending the product's lifespan.
- Operates quietly at 26 dB(A), ensuring a non-disruptive atmosphere for daily activities.
- Durable construction featuring ABS plastic housing and PBT blades, designed to resist deformation.
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#9
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- High airflow with a fan speed of 2500 RPM, delivering 195 CFM for effective air circulation and humidity control.
- Designed for quiet operation at just 30 dB, featuring precision blades and a flow deflector to minimize noise.
- Compact and lightweight for easy placement in constrained spaces where larger fans are impractical.
- Tool-free installation with a simple locking mechanism for exhaust and intake flanges, plus an included 5.9-foot power cord for convenience.
- Versatile use in various environments such as grow rooms, kitchens, and basements to enhance air quality and reduce odors.
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- High airflow with a fan speed of 2500 RPM, delivering 195 CFM for effective air circulation and humidity control.
- Designed for quiet operation at just 30 dB, featuring precision blades and a flow deflector to minimize noise.
- Compact and lightweight for easy placement in constrained spaces where larger fans are impractical.
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#10
14% Off
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- Lightweight and compact construction fan ideal for tight spaces, equipped with flanges for easy hookup and a 5.9-foot power cord.
- Efficient airflow with a fan speed of 2500 RPM, delivering 195 CFM while maintaining a low noise level of 30 dB.
- Features a variable speed controller with three settings: HIGH, MED, LOW, and a sturdy grounded plug.
- Designed for easy installation and maintenance with removable duct ends featuring locking tabs; includes one 4-inch inline fan and one speed controller.
- Versatile use to enhance airflow, reduce humidity, and lower temperatures in spaces such as grow tents, greenhouses, kitchens, bathrooms, and garages.
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- Lightweight and compact construction fan ideal for tight spaces, equipped with flanges for easy hookup and a 5.9-foot power cord.
- Efficient airflow with a fan speed of 2500 RPM, delivering 195 CFM while maintaining a low noise level of 30 dB.
- Features a variable speed controller with three settings: HIGH, MED, LOW, and a sturdy grounded plug.
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