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Unique controllers - our 4 inch duct fan includes a variable speed controller which increases or decreases speeds without background noise or hum at low speeds. Extremely compact and fits into spaces with minimal clearance. Size & features - duct size: 4 inches | dimensions: 6.
Built & design - terrabloom grow fan features aluminum housing that resists rust, protects the motor & blades from accidental damage. Our fans don’t purge or waste electricity at lower speeds. Built in blowers not only simulate winds, heating and cooling transfer, smokes & exhaust odors but also intakes fresh airflow. Efficiency - terrabloom air duct fan 4 inch features brushless ec motor and dual jet type blades, this blower delivers 141 CFM airflow rate using just 21 Watts at max speed.

Easy to usethe duct fan and controller can be mounted with no additional assembly. The permanently-lubricated bearing reduces wear and tear to cut down on maintenance.
Adjust from 0-100% fan speed to without any increase in humming or buzzing sounds. Our brushless dc motor ec motor performs 30% more efficiently with 60% less power consumption than AC motors.

Easy installation: feature with lightweight and compact enough to be installed in any angel and little availvable areas. Mixed flow design: compared with axial and centrifugal fans, mixed flow fan has large air volume and high static pressure for ventilation and purification.
Durable plastic housing and blades revolve smoothly and powerfully and cut noise output to 35 Db. Simply remove the duct ends with locking tabs for quick installation and easy maintanance. 110v standard household plug; Pre-wired 5. 9 feet power cord. Speed controller: three speed switches enable fan to run at low, medium and high speed. Upgraded fan: size: 4inch; fan speed: 2500 rpm; air flow: 130 cfm; wind pressure: 220 pa; bearings: double ball.

Versatile applications:suitable for grow tent, basement or kitchen, indoor growing room, bathroom, improve air circulation, reduce humidity and lower temperature. Effective ventilation: powerful 4" vent blower with 2500 rpm fan speed can create 195 CFM air flow.
Etl listed and features an automatic reset function to prevent overheating or other safety issues. It works efficiently in multiple ventilation scenes:exhaust fan for grow tent, transferring heat, as well as controlling proper humidity, temperature, intaking fresh air, and air quality. The cable length is 5. 9 feet and can be easily set.

Durable plastic housing and blades revolve smoothly and powerfully and cut noise output to 35 dB. Simply remove the duct ends with locking tabs for quick installation and easy maintanance.
Safe and versatile applications : fully enclosed junction box, waterproof and dustproof design ensures safe usage and long service life in industrial, household and horticulture ventilation applications. Max ambient temp is 140℉/ 60℃. You can correctly and precisely adjust the airflow level according to your requirement.

Efficient fan - quiet and efficient design, and control proper humidity, circulate fresh air, transfer heat or cool rooms, temperature, work well in ventilating grow tents, and air quality for your grow area; Be aware that 195 CFM is the maximum value of air flow tested at ZERO atmospheric pressure.
Low noise - fan runs at 2930 rpm with 195 cfm of airflow; fan is equipped with a flow deflector to cut noise output; Runs at 30 dB noise level to ensure your grow operation won’t disturb your life. Wide applications - clean and freshen the air for your plants, basement workshops, grow tents, bathrooms, hydroponics, keeping your environment cool and balanced, bakeries, cafes, ideal for indoor ventilation and odor filtration; Widely used in pharmacies, greenhouses, etc.

Durable 3-pole grounded plug construction. Mini construction: lightweight, compact fan takes up minimal space, suitable for applications where larger fans just won’t fit.
Multifunction: perfect for improve air flow, kitchens, grow rooms, clear the air and lower temperatures.9 feet length power cord. Can use in grow tents, bathrooms, reduce humidity, locker rooms, greenhouses, basements, garage. Flanges on both the intake and exhaust ends for simple and easy hookup, 5. Built-in grounded control outlet.

Durable and stable: the factory-painted galvanized steel parts can resist atmospheric corrosion from humidity; The sturdy structure minimizes rattling and reduces wear and tear so that the fan will last a long time.
Widely applicable: ideal for cooling lighting fixtures and managing hot and humid conditions in grow tents, commercial grow rooms, kitchens, hydroponics, HVAC applications, bathrooms, and more. Please note that the speed controller is not included.

Safe and versatile applications : fully enclosed junction box, household and horticulture ventilation applications. Easy installation: feature with lightweight and compact enough to be installed in any angel and little availvable areas.
110v standard household plug; Pre-wired 5. 9 feet power cord. Speed controller: three speed switches enable fan to run at low, medium and high speed. Such as bathroom, waterproof and dustproof design ensures safe usage and long service life in industrial, office, washroom, grow tent. Simply remove the duct ends with locking tabs for quick installation and easy maintanance. Max ambient temp is 140℉/ 60℃.
1. AC Infinity
#ad
AC Infinity CLOUDLINE S4, Grow Tents, Quiet 4” Inline Duct Fan with Speed Controller, Ventilation Exhaust Fan for Heating Cooling Booster, Hydroponics
#adAC Infinity #ad - See t-series for temperature and humidity controls. Designed to ventilate grow tents, circulate air, transfer heating/cooling to rooms, exhaust odors, and cool AV racks. Kit also includes corded AC power adapter, installation manual, and all necessary mounting hardware.More information #ad
Airflow: 205 cfm | noise: 28 dBA | Bearings: Dual Ball. Duct size: 4” | dimensions: 6. 9 x 11. 9 x 7. 4 in. Mixed flow design combined with an EC-powered motor for a truly quiet and energy efficient performance. Features an 8-speed manual controller utilizing PWM.Brand | AC Infinity #ad |
Manufacturer | AC Infinity #ad |
Height | 11.9 Inches |
Length | 6.9 Inches |
Width | 7.4 Inches |
Part Number | AI-CLS4 |
Model | CLOUDLINE S4 |
More information #ad
2. TerraBloom
#ad
Quiet 4 Inch Inline Duct Fan with Variable Speed Controller – Ventilation Exhaust Fan for Heating Cooling Booster and Grow Tents, TerraBloom ECMF-100
#adTerraBloom #ad - You can also upgrade to our wireless remote control Model: ECMF-WR and intelligent thermostat speed controller Model: SC-ECMF as well. It translates into less than $50 annual cost of 24/7 operation at max speed using $029 average cost per KWH. This fan has ipX4 ingress protection rating to ensure long lasting.Unique controllers - our 4 inch duct fan includes a variable speed controller which increases or decreases speeds without background noise or hum at low speeds. Extremely compact and fits into spaces with minimal clearance. Size & features - duct size: 4 inches | dimensions: 6.
More information #ad
3 x 7. 3 x 5. 9 inches | bearings: dual ball | noise 18 dba | air flow: 141 CFM | HVI Certified | Energy Star Listed | 2 years Warranty. Applications - our 4 inch inline fan can be used in indoor grow facilities and vertical farms, commercial drying and air filtration applications. Built & design - terrabloom grow fan features aluminum housing that resists rust, protects the motor & blades from accidental damage. Our fans don’t purge or waste electricity at lower speeds. Built in blowers not only simulate winds, heating and cooling transfer, smokes & exhaust odors but also intakes fresh airflow. Efficiency - terrabloom air duct fan 4 inch features brushless ec motor and dual jet type blades, this blower delivers 141 CFM airflow rate using just 21 Watts at max speed.
Brand | TerraBloom #ad |
Manufacturer | TerraBloom #ad |
Height | 5.9 Inches |
Length | 7.3 Inches |
Width | 6.3 Inches |
Warranty | All ECMF series fans are covered by a 2 year warranty against manufacturing defects |
More information #ad
3. TURBRO
#ad
4 Inch Inline Duct Fan with Solid Metal Case, 195 CFM Quiet Vent Fan with Variable Speed Controlled for Grow Tent and Ventilation, TURBRO AirSupply ES4
#adTURBRO #ad - Quiet operationwhisper-quiet operation is possible thanks to the variable speed controller. Outstanding ventilationthe airsupply es4 delivers an airflow of 195 cfm at 5000 RPM with only 18 watts of power.Easy to usethe duct fan and controller can be mounted with no additional assembly. The permanently-lubricated bearing reduces wear and tear to cut down on maintenance.
More information #ad
Multiple applications designed for increased air circulation and moisture/odor removal in grow tents, bathrooms, server rooms, greenhouses, A/V equipment, or industrial workshops. Durable construction engineered with an airtight steel case and IP44 waterproof protection in a compact design, the ES4 will stay running in harsh environments, big or small. Adjust from 0-100% fan speed to without any increase in humming or buzzing sounds. Our brushless dc motor ec motor performs 30% more efficiently with 60% less power consumption than AC motors.
Brand | TURBRO #ad |
Manufacturer | TURBRO #ad |
Height | 5.91 Inches |
Length | 6.26 Inches |
Weight | 2.7 Pounds |
Width | 7.24 Inches |
Part Number | ES4 |
Model | ES4 |
Warranty | We provide a 2-year warranty from the purchase date. |
More information #ad
4. iPower
#ad
Hydroponics Ventilation, iPower 4 Inch 130 CFM Inline Duct Fan with Variable Speed Controller HVAC Quiet Exhaust Blower for Heating Cooling, Grow Tents, 4"
#adiPower #ad - Max ambient temp is 140℉/ 60℃. Durable 3-pole grounded plug need no extra wires to deal with. Such as bathroom, office, washroom, waterproof and dustproof design ensures safe usage and long service life in industrial, grow tent. Safe and versatile applications : fully enclosed junction box, household and horticulture ventilation applications.Easy installation: feature with lightweight and compact enough to be installed in any angel and little availvable areas. Mixed flow design: compared with axial and centrifugal fans, mixed flow fan has large air volume and high static pressure for ventilation and purification.
More information #ad
You can correctly and precisely adjust the airflow level according to your requirement. Durable plastic housing and blades revolve smoothly and powerfully and cut noise output to 35 Db. Simply remove the duct ends with locking tabs for quick installation and easy maintanance. 110v standard household plug; Pre-wired 5. 9 feet power cord. Speed controller: three speed switches enable fan to run at low, medium and high speed. Upgraded fan: size: 4inch; fan speed: 2500 rpm; air flow: 130 cfm; wind pressure: 220 pa; bearings: double ball.
Brand | iPower #ad |
Manufacturer | iPower #ad |
Height | 11.61 Inches |
Length | 13.78 Inches |
Width | 8.07 Inches |
Part Number | GLFANXINLINEEXPC4-B |
Model | 4 Inch 130 CFM Inline Duct Fan |
More information #ad
5. iGrowtek
#ad
IGrowtek 4 Inch Inline Fan 4in Duct Fan,Quiet Exhaust Fan for Grow Tent,Vent Booster Fan,Inline air Blower,195 CFM
#adiGrowtek #ad - Low noise: the deflector makes the fan airflow more concentrated and reduces the turbulence energy, thereby reducing the sound output to only 30 dB, which does not have any harm to your health and will not disturb your work.Versatile applications:suitable for grow tent, basement or kitchen, indoor growing room, bathroom, improve air circulation, reduce humidity and lower temperature. Effective ventilation: powerful 4" vent blower with 2500 rpm fan speed can create 195 CFM air flow.
More information #ad
Reasonable design: & safe: the light and compact fan takes up the smallest space; it can also be used in a small space. Easy installation: the flanges on the intake and exhaust ends can be connected easily and quickly. Etl listed and features an automatic reset function to prevent overheating or other safety issues. It works efficiently in multiple ventilation scenes:exhaust fan for grow tent, transferring heat, as well as controlling proper humidity, temperature, intaking fresh air, and air quality. The cable length is 5. 9 feet and can be easily set.
Brand | iGrowtek #ad |
Manufacturer | iGrowtek #ad |
Model | GDF-100PA |
More information #ad
6. iPower
#ad
4', 4 inch Fan with Speed Controller, iPower 130 CFM Inline Duct Variable HVAC Quiet Exhaust Blower for Heating Cooling, Grow Tents
#adiPower #ad - Speed controller: three speed switches enable fan to run at low, medium and high speed. 110v standard household plug; Pre-wired 5. 9 feet power cord. Durable 3-pole grounded plug need no extra wires to deal with. Easy installation: feature with lightweight and compact enough to be installed in any angel and little availvable areas.Durable plastic housing and blades revolve smoothly and powerfully and cut noise output to 35 dB. Simply remove the duct ends with locking tabs for quick installation and easy maintanance.
More information #ad
Upgraded fan: size: 4inch; fan speed: 2500 rpm; air flow: 130 cfm; wind pressure: 220 pa; bearings: double ball. Such as bathroom, washroom, office, grow tent. Mixed flow design: compared with axial and centrifugal fans, mixed flow fan has large air volume and high static pressure for ventilation and purification. Safe and versatile applications : fully enclosed junction box, waterproof and dustproof design ensures safe usage and long service life in industrial, household and horticulture ventilation applications. Max ambient temp is 140℉/ 60℃. You can correctly and precisely adjust the airflow level according to your requirement.
Brand | iPower #ad |
Manufacturer | iPower #ad |
Height | 11.61 Inches |
Length | 13.78 Inches |
Width | 8.07 Inches |
Part Number | GLFANXINLINEEXPC4-A |
Model | 4 Inch 130 CFM Inline Duct Fan |
More information #ad
7. VIVOHOME
#ad
VIVOHOME 4 Inch 195CFM Plastic Round Exhaust Inline Duct Fan for Hydroponics Grow Tent Ventilation
#adVIVOHOME #ad - Easy to install - simply affix the exhaust and intake mounting flange together with locking tabs, even the impeller and blades, no tools or screws required; The housing, are easy to detach for cleaning and maintenance. Premium construction - blades are made with high-quality components for smooth, whisper-quiet operation; Ultra-accurate craftsmanship of the centrifuge reduces noise and vibration; Compact design means minimal use of space and will fit in any grow room.Efficient fan - quiet and efficient design, and control proper humidity, circulate fresh air, transfer heat or cool rooms, temperature, work well in ventilating grow tents, and air quality for your grow area; Be aware that 195 CFM is the maximum value of air flow tested at ZERO atmospheric pressure.
More information #ad
Low noise - fan runs at 2930 rpm with 195 cfm of airflow; fan is equipped with a flow deflector to cut noise output; Runs at 30 dB noise level to ensure your grow operation won’t disturb your life. Wide applications - clean and freshen the air for your plants, basement workshops, grow tents, bathrooms, hydroponics, keeping your environment cool and balanced, bakeries, cafes, ideal for indoor ventilation and odor filtration; Widely used in pharmacies, greenhouses, etc.
Brand | VIVOHOME #ad |
Manufacturer | VIVOHOME #ad |
Height | 7 Inches |
Length | 7.3 Inches |
Weight | 2.2 Pounds |
Width | 6.7 Inches |
Part Number | VH175 |
Model | VH175 |
More information #ad
8. iPower
#ad
4" Fan & Speed, Black, iPower 4 Inch 195 CFM Inline Duct Ventilation Fan Air Circulation Vent Blower with Variable Speed Controller for Grow Tent
#adiPower #ad - Package include: 1 pack 4 inch inline fan, 1 pack fan speed controller. High effective fan: transfer air to your target location in a quick and reasonably quiet way, with a fan speed of 2500 RPM for an air flow of 195 CFM.Durable 3-pole grounded plug construction. Mini construction: lightweight, compact fan takes up minimal space, suitable for applications where larger fans just won’t fit.
More information #ad
Power source Type: Corded-Electric. Low noise design reduces sound output to just 30 dB. Variable speed controller: one control switch for 3 settings: HIGH, MED, LOW. Multifunction: perfect for improve air flow, kitchens, grow rooms, clear the air and lower temperatures.9 feet length power cord. Can use in grow tents, bathrooms, reduce humidity, locker rooms, greenhouses, basements, garage. Flanges on both the intake and exhaust ends for simple and easy hookup, 5. Built-in grounded control outlet.
Brand | iPower #ad |
Manufacturer | iPower #ad |
Height | 7 Inches |
Length | 8.1 Inches |
Width | 7.7 Inches |
Part Number | GLFANXINLLITE4CTR |
Model | 4 Inch 195 CFM Inline Duct |
Warranty | 1 year |
More information #ad
9. VIVOSUN
#ad
And Kitchens, ETL Certified, Basements, Hydroponics, VIVOSUN 4-Inch 203 CFM Inline Duct Fan: Air Circulation Vent Blower with a 5.4 ft. Power Cord for Grow Tents
#adVIVOSUN #ad - Strong airflow: the vivosun 4” inline duct fan is equipped with a powerful blower with a fan speed of 2500 RPM and an airflow of 203 CFM; It optimizes ventilation by targeting airflow to your plants. Operates smoothly with minimal noise: this powerful fan generates a low noise output of 49 dB; Whether it’s indoors or outdoors, this quiet fan runs smoothly and won’t disturb you with a consistently loud whirring noise.Durable and stable: the factory-painted galvanized steel parts can resist atmospheric corrosion from humidity; The sturdy structure minimizes rattling and reduces wear and tear so that the fan will last a long time.
More information #ad
Innovative design: the aerodynamic centrifugal impeller of this unit delivers strong airflow with a disproportionately low sound profile; Fitted with dual flanges for a hassle-free hookup; ETL Certified. Widely applicable: ideal for cooling lighting fixtures and managing hot and humid conditions in grow tents, commercial grow rooms, kitchens, hydroponics, HVAC applications, bathrooms, and more. Please note that the speed controller is not included.
Brand | VIVOSUN #ad |
Manufacturer | VIVOSUN #ad |
Height | 4 Inches |
Length | 9.3 Inches |
Weight | 7.8 Pounds |
Width | 9.7 Inches |
Part Number | 306301-4 |
Warranty | Manufacturer Warranty for 360 days from date of purchase. |
More information #ad
10. iPower
#ad
Quiet HVAC Exhaust Blower, 4" Fan & Speed, iPower GLFANXINLINEEXPC4 4 Inch 130 CFM Inline Duct Fan with Variable Speed Controller Ventilation, Black
#adiPower #ad - You can correctly and precisely adjust the airflow level according to your requirement. Mixed flow design: compared with axial and centrifugal fans, mixed flow fan has large air volume and high static pressure for ventilation and purification.Safe and versatile applications : fully enclosed junction box, household and horticulture ventilation applications. Easy installation: feature with lightweight and compact enough to be installed in any angel and little availvable areas.
More information #ad
Durable 3-pole grounded plug need no extra wires to deal with. Upgraded fan: size: 4inch; fan speed: 2500 rpm; air flow: 130 cfm; wind pressure: 220 pa; bearings: double ball. Durable plastic housing and blades revolve smoothly and powerfully and cut noise output to 35 dB. 110v standard household plug; Pre-wired 5. 9 feet power cord. Speed controller: three speed switches enable fan to run at low, medium and high speed. Such as bathroom, waterproof and dustproof design ensures safe usage and long service life in industrial, office, washroom, grow tent. Simply remove the duct ends with locking tabs for quick installation and easy maintanance. Max ambient temp is 140℉/ 60℃.
Brand | iPower #ad |
Manufacturer | iPower #ad |
Height | 9.1 Inches |
Length | 13 Inches |
Width | 8.7 Inches |
Part Number | GLFANXINLINEEXPC4 |
Model | GLFANXINLINEEXPC4 |
More information #ad