Best 4 Inch Inline Duct Fan High 500 Cfm in 2025
Updated on August 2025
#1
Recommended
Free Shipping
- Ventilates grow tents and circulates air effectively.
- Equipped with a 10-speed wired fan controller and UIS compatibility.
- Energy-efficient PWM-controlled EC motor operates quietly with minimal heat output.
- Mixed flow design enhances airflow in high-resistance environments.
- Duct size: 4”; dimensions: 6.9 x 11.9 x 7.4 in.; airflow: 205 CFM; noise level: 28 dBA; features dual ball bearings.
Read More
- Ventilates grow tents and circulates air effectively.
- Equipped with a 10-speed wired fan controller and UIS compatibility.
- Energy-efficient PWM-controlled EC motor operates quietly with minimal heat output.
- Mixed flow design enhances airflow in high-resistance environments.
- Duct size: 4”; dimensions: 6.9 x 11.9 x 7.4 in.; airflow: 205 CFM; noise level: 28 dBA; features dual ball bearings.
#2
Value for Money
Free Shipping
- Efficient ventilation with a powerful 2250 RPM motor and 50 dB noise level for quiet operation.
- Easy to install with a sturdy high-quality plastic construction and a switch metal ring.
- Versatile 4-inch fan serves as both an intake and exhaust fan for improved airflow and air circulation.
- Ideal for various applications including grow rooms, HVAC systems, and bathroom ventilation.
- 24-hour professional customer support available for inquiries and assistance.
Read More
- Efficient ventilation with a powerful 2250 RPM motor and 50 dB noise level for quiet operation.
- Easy to install with a sturdy high-quality plastic construction and a switch metal ring.
- Versatile 4-inch fan serves as both an intake and exhaust fan for improved airflow and air circulation.
- Ideal for various applications including grow rooms, HVAC systems, and bathroom ventilation.
Read More
#3
Free Shipping
- 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.
Read More
- 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.
Read More
#4
Free Shipping
- Powerful inline fan operating at 2200 RPM ensures efficient air circulation for optimal ventilation while maintaining a noise level below 50 dB.
- Constructed with high-quality plastic for durability, the fan is designed for easy installation and removal.
- Long-lasting ventilation solution featuring a robust motor and flexible ducting made from premium materials.
- Versatile usage for both commercial and residential ventilation including grow rooms, HVAC systems, and bathroom applications.
- Includes lifelong technical support and responsive customer service for any product-related inquiries.
Read More
- Powerful inline fan operating at 2200 RPM ensures efficient air circulation for optimal ventilation while maintaining a noise level below 50 dB.
- Constructed with high-quality plastic for durability, the fan is designed for easy installation and removal.
- Long-lasting ventilation solution featuring a robust motor and flexible ducting made from premium materials.
Read More
#5
30% Off
Free Shipping
- 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
Read More
- 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
Read More
#6
Free Shipping
- Energy-efficient operation with a fan speed of 2450 RPM and airflow of 440 CFM, utilizing both axial and centrifugal fan technologies.
- Low noise level of 50 dB achieved through sturdy construction and centrifugal impeller design to minimize vibration.
- Stepless speed controller allows for precise adjustments to airflow levels, accommodating various needs.
- Includes a mounting bracket for easy installation and maintenance, featuring rope hangers for lifting.
- Suitable for air cleaning and temperature control in industrial settings and home gardening applications.
Read More
- Energy-efficient operation with a fan speed of 2450 RPM and airflow of 440 CFM, utilizing both axial and centrifugal fan technologies.
- Low noise level of 50 dB achieved through sturdy construction and centrifugal impeller design to minimize vibration.
- Stepless speed controller allows for precise adjustments to airflow levels, accommodating various needs.
- Includes a mounting bracket for easy installation and maintenance, featuring rope hangers for lifting.
Read More
#7
17% Off
Free Shipping
- 4-inch inline duct booster fan with a 2600 RPM motor, delivering 280 CFM airflow for effective air circulation and improved indoor air quality.
- Can function as both an intake and exhaust fan, providing versatile ventilation solutions by bringing in fresh air or removing indoor pollutants.
- Operates quietly at 31db, ensuring improved air quality without disrupting your environment.
- Easy installation process: remove the main unit using metal clips, secure the base with screws, and reconnect the main unit and pipes.
- Suitable for various settings, including bathrooms, kitchens, living rooms, and commercial spaces like restaurants and offices.
Read More
- 4-inch inline duct booster fan with a 2600 RPM motor, delivering 280 CFM airflow for effective air circulation and improved indoor air quality.
- Can function as both an intake and exhaust fan, providing versatile ventilation solutions by bringing in fresh air or removing indoor pollutants.
- Operates quietly at 31db, ensuring improved air quality without disrupting your environment.
Read More
#8
Free Shipping
- High-efficiency inline duct fan designed with a 2200 RPM motor operating at under 30 dB for effective air quality enhancement.
- Includes a remote control for convenient speed adjustment (HIGH/LOW) and On/Off functionality.
- Versatile design acts as both an intake and exhaust fan for optimal ventilation and air circulation.
- Constructed from durable hard plastic for stability; features a metal ring for straightforward duct installation.
- Suitable for commercial and residential applications, including grow tents, HVAC systems, and bathroom ventilation.
- Backed by a one-year warranty and 24-hour customer support for assistance with inquiries.
Read More
- High-efficiency inline duct fan designed with a 2200 RPM motor operating at under 30 dB for effective air quality enhancement.
- Includes a remote control for convenient speed adjustment (HIGH/LOW) and On/Off functionality.
- Versatile design acts as both an intake and exhaust fan for optimal ventilation and air circulation.
- Constructed from durable hard plastic for stability; features a metal ring for straightforward duct installation.
Read More
#9
22% Off
Free Shipping
- 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.
Read More
- 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%.
Read More
#10
Free Shipping
- PWM-controlled EC motor with mixed-flow design offers quiet and energy-efficient operation, producing 195 CFM airflow at 28 dB noise level
- Three adjustable speed settings allow easy customization to meet ventilation needs
- ETL-listed for safety, features automatic reset to avoid overheating and locked-rotor protection to cut off power when needed
- Quick and secure installation with intake and exhaust flanges, plus a 5.9 ft cord for flexible positioning; detachable parts facilitate cleaning
- Ideal for enhancing air quality in various settings including grow tents, basements, and rooms by exhausting stale air and regulating humidity and temperature
Read More
- PWM-controlled EC motor with mixed-flow design offers quiet and energy-efficient operation, producing 195 CFM airflow at 28 dB noise level
- Three adjustable speed settings allow easy customization to meet ventilation needs
- ETL-listed for safety, features automatic reset to avoid overheating and locked-rotor protection to cut off power when needed
Read More
Bluetooth Speaker Light For Bathroom
See All
Attic Fan Thermostat Humidity Control
See All
9x9 Bathroom Exhaust Fan 130 Cfm
See All
