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Updated: 18 Jul 2025

Top 10 Inline Vent Fans

#1
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VEVOR Inline Duct Fan, 6-Inch 400 CFM with Variable Speed Controller, Quiet AC-motor Ventilation Exhaust Fan for Cooling Booster, Grow Tents, Hydroponics

Brand: VEVOR
$54.99
⭐ 5
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    Universal Applications: Take a deep breath and relax. Our inline duct fan is specially designed as an exhaust for heat, humidity, and smoke, improving airflow in air planting tents, hydroponic planting rooms, electronic equipment rooms, kitchens, basements, etc. Get ready to go with the flow.
  • Blow Your Worries Away: Our inline fan provides a sufficient airflow of 400 cfm, enough to handle wide areas of ventilation and dehumidification, maintaining clean and fresh air circulation in dry environments all the time. Take control of any environment confidentially.
  • Power in Silence: Are you tired of loud, obnoxious ducts? Well, get ready to work in silence! Our inline exhaust fan is equipped with a high-quality AC motor that ensures strong power at a low noise of 34 dB, which will not disturb your work and life. At the same time, the motor saves 30% on energy consumption, extending its service life.
  • Control you can Feel: Do you want to get various airflow speeds at any time to achieve better ventilation effects while still being in control? Our inline air duct fan can be controlled via the manual knobs. You can adjust the speed to meet the ventilation needs of different environments. What are you waiting for? Go with the flow!
  • Everything You Need: To save time and cut costs dramatically, we provide a 6-inch inline fan with hang-up slings and non-vibration rubber mats and straps, so you can finish the installation quickly! You are in control! Choose between hanging it or mounting it on the wall.
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#2
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Simple Deluxe 4 Inch Inline Duct Fan, 195 CFM Ventilation Fan, Exhaust HVAC Vent Blower for Hydroponics, Grow Tent, Basements, Greenhouses, Attic, Black

Brand: Simple Deluxe
$13.61
⭐ 4.6
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    Unique Design: 4 inch inline fan designs mini construction, lightweight, portable and compact fan takes up minimal space, suitable for applications where larger fans just won't fit
  • Powerful & Effective Airflow: 4 inch inline duct fan powerful blower with a fan speed of 2500 RPM, inline duct fan can create an air flow of 195 CFM. It can not only circulate fresh air, but also control proper humidity, temperature and air quality
  • Quiet & Comfortable Operation: 4 inch duct fan blades made with high quality components for smooth operation. Fitted with a flow deflector that concentrates the fan stream to reduce sound output to just 30 dB, which ensures won't disturb your life
  • Easy to Install: Simply affix the exhaust and intake mounting flange together with locking tabs, no tools or screws required, 5.9 feet length power cord included. The housing, impeller and blades are easy to detach for maintenance and cleaning
  • Wide Applications: Inline booster duct fan can clean and freshen the air, improve airflow to reduce humidity, block odors, and lower temperatures in grow tents, grow rooms, greenhouses, hydroponics, basements, kitchens, bathrooms, basement workshops, etc
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#3
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AC Infinity RAXIAL S6, Inline Booster Duct Fan 6” with Speed Controller - Low Noise Inline HVAC Blower Can Fan for Basements, Bathrooms, Kitchens, Workshops

Brand: AC Infinity
$35.99
⭐ 4.1
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    A duct fan designed to increase existing airflow in HVAC systems and ventilate home spaces like attics and workshops.
  • Features a variable fan speed controller, enabling you to optimize airflow and noise level for any application.
  • Unibody die-cast construction with no welded seams; reduces vibration while ensuring smoother airflow.
  • AC brushless motor with steel blades and lubricated bearings; not suitable in restricted airflow applications.
  • Duct size: 6”
  • Dimensions: 7.28 x 5.90 x 5.90 in.
  • Airflow: 265 CFM
  • Noise: 35 dBA
  • Bearings: Dual Ball
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#4
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iPower 4 Inch Inline Booster Duct Fan 100 CFM HVAC Exhaust Ventilation Blower with Low Noise for Grow Tent, Basements, Bathrooms, Kitchens and Attics

Brand: iPower
$18.84
⭐ 5
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    Durable: Superior balanced centrifugal impeller and high strength housing for long service life. The motor features a permanently lubricated bearing that operates quietly and requires no maintenance.
  • Efficient but quiet: Lead to great effects with a diameter of 4 inches, speed of 2930 RPM and 100 CFM air flow. A less than 40 dB noise level does not have any harm and will not disturb your work.
  • Easy to install: Portable, lightweight and easy to install in areas with little available space. Sufficient 5.5' grounded power cord inside is convenient to use.
  • Wide application: Exhaust air for HVAC to remove heats & odors or intake fresh air, used in grow tents, kitchens, bathrooms, basements, attics, garage, workshops etc.
  • Specification: Voltage: 110/120V; Wattage: 12W; Power Cord: 5.5FT. Max operating temp of motor is 130℃ / 266℉; Max ambient temp is 60℃ / 140℉. Note: Please turn the fan off immediately if the blades get stuck by other objects and turn on after clean.
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#5
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VIVOSUN 6 Inch Inline Duct Fan 240 CFM, HVAC Exhaust Ventilation Fan with Low Noise for Basements, Bathrooms, Kitchens and Attics, Silver

Brand: VIVOSUN
$27.99
⭐ 4.1
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    Durable: The fan has a strong motor which features a permanently lubricated bearing that operates quietly and requires no maintenance
  • Compact But Efficient: This duct fan is compact and lightweight enough to be installed in areas with little available space; With a diameter of 6 inches, speed of 2960 RPM and 240 CFM air flow
  • Low Noise: Superior balanced centrifugal impeller for long service life & quiet operation; A less than 37 dB noise level does not have any harm and will not disturb your work
  • Wide Applications: You can have it in bathrooms, kitchens, workshops, basements, attics and etc, in order to boost airflow in HVAC systems; Also, it can be used in grow rooms as intake fans or exhaust fan
  • Specifications: Voltage 110/120V, Power 37W; Max Operating Temp of Motor is 130℃ / 266℉; Max Ambient Temp is 60℃ / 140℉; Note: Please turn the fan off immediately if the blades get stuck by other objects
  • To maintain optimal performance of the exhaust fan, clean the fan after the first week of use with the carbon filter connected, and then clean regularly based on usage conditions
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#6
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InfiniPower 4 Inch 195 CFM Inline Ventilation Variable Fan Speed Controller, Air Circulation Vent Blower for Grow Tent, Greenhouse, Kitchen, Basement, Black

Brand: InfiniPower
$18.57
⭐ 5
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    Powerful & Effective Airflow: 4 inch inline duct fan powerful blower with a fan speed of 2500 RPM, inline duct fan can create an air flow of 195 CFM. It can not only circulate fresh air, but also control proper humidity, temperature and air quality.
  • 4" Mini Fan with Speed Controller: Lightweight, compact fan takes up minimal space, suitable for applications where larger fans just won’t fit. Flanges on both the intake and exhaust end for simple and easy hookup, 5.9 feet length power cord.
  • Quiet & Comfortable Operation: 4 inch duct fan blades made with high quality components for smooth operation. Fitted with a flow deflector that concentrates the fan stream to reduce sound output to just 30 dB, which ensures won't disturb your life.
  • Variable Speed Controller: One control switch for 3 settings: HIGH, MID, and LOW. Durable 3-pole grounded plug construction. Built-in grounded control outlet. Package Included: 1 x 4-inch inline fan, 1 x fan speed controller.
  • Wide Applications: Inline booster duct fan can clean and freshen the air, improve airflow to reduce humidity, block odors, and lower temperatures in grow tents, grow rooms, greenhouses, hydroponics, basements, kitchens, bathrooms, basement workshops, etc.
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#7
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AC Infinity CLOUDLINE PRO S6, Quiet 6” Inline Duct Fan with Speed Controller - EC Motor Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics

Brand: AC Infinity
$99.00
⭐ 4.8
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    Designed to ventilate grow tents, transfer heating/cooling to rooms, circulate air, exhaust odors, and cool AV racks.
  • Features a wired 10-speed fan controller; also compatible with all UIS controllers with intelligent programming.
  • PWM-controlled EC motor provides quiet and energy-efficient performance with minimal heat and noise.
  • Mixed flow design with stator blade and hydrodynamic wind circles enables airflow delivery in high resistance areas.
  • Duct Size: 6”
  • Dimensions: 7.9 x 12.6 x 8.4 in.
  • Airflow: 402 CFM
  • Noise: 32 dBA
  • Bearings: Dual Ball
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#8
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Voltset 4 Inch Duct Fan, Inline Ventilation Exhaust Fan, 280 CFM Duct Intake High Efficiency Air Fan for Vent Bathroom, Kitchen, Grow Tent, Hydroponics, 3D Printer

Brand: Voltset
$44.99
⭐ 4.2
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    High-Efficiency Inline Duct Fan: Equipped with a powerful 2200 RPM motor and operating at less than 30 dB, this fan quickly improves indoor air quality while maintaining a quiet environment.
  • Multi-Purpose Duct Fan: Functions as both an intake fan to bring in fresh air and an exhaust fan to remove indoor gases, ensuring comprehensive ventilation and air circulation.
  • Easy to Install: Made from high-quality hard plastic, the fan features a sturdy structure for long-term stability. Includes a switch metal ring for easy duct installation.
  • Widely Applicable: Ideal for both commercial and residential use, perfect for grow tents, planting rooms, HVAC systems, bathroom ventilation, and more.
  • Customer Service: Voltset offers a one-year warranty and 24-hour professional customer service. Contact us anytime with your questions or concerns.
  • Note: Higher wattage results in stronger wind force and increased noise levels.
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#9
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Hon&Guan 6 Inch Inline Booster Duct Fan with Speed Controller - 345 CFM Airflow with 19.2W Ultra-Low Power and Low Noise

Brand: Hon&Guan
$34.99
⭐ 4.2
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    【Energy-Efficient Ventilation】This powerful inline duct fan speed of 3300 RPM can create the air flow of 345 CFM, Maximum power consumption is only 19.2W. Upgrade DC motor & low noise effectively circulating air, quickly move vast amount of air to exhaust odors.
  • 【Application Scenarios】The 6 inch booster duct fan designed to quietly ventilate grow rooms, bathrooms, kitchens, workshops, basements, attics and etc, in order to boost airflow in HVAC systems.
  • 【Easy to Install】Hon&Guan air exhaust fan's blade and the body are made of high quality plastic, for quick removal and easy maintenance.
  • 【Adjustable Controller】 The 6-inch duct fan includes a variable speed controller, which can allows you to adjust the airflow and noise at will.
  • 【Excellent Performance】Duct size: 6”
  • Dimensions: 7.28 x 5.79 x 5.79 in.
  • Voltage: 100-240V
  • Air Presssure: 142 Pa
  • Noise: 32 dBA
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#10
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VIVOSUN D4 4 Inch 195 CFM Inline Duct Ventilation Fan HVAC Vent Blower for Hydroponics Grow Tent

Brand: VIVOSUN
$29.99
⭐ 4.1
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    Powerful Airflow: This powerful blower with a fan speed of 2500 RPM can create an airflow of 195 CFM; It works efficiently in ventilating grow tents, transferring heat or cool rooms, circulating fresh air, as well as controlling proper humidity, temperature, and air quality for your grow area
  • Quiet Operation: Fitted with a flow deflector that concentrates the fan stream and cuts turbulent kinetic energy to reduce sound output to just 30 dB, which does not have any harm to your health and will not disturb your work
  • Safety Protection: The motor is ETL listed and features an automatic reset function to prevent overheating or other safety issues; The electrical junction box is made from flame-retardant components for fireproofing
  • Simple Hookup: The flanges on both the intake and exhaust ends are simple to assemble with the vent hose by locking tabs; A cord of 5.9-feet long for hassle-free setup; The housing, even the impeller and blades, are easy to detach for cleaning and maintenance
  • Wide Applications: It can improve airflow to reduce humidity, block odors, and lower temperatures in grow rooms, basements, or kitchens
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