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VIVOSUN 4” Inline Booster Duct Fan with Speed Regulator, 130 CFM Quiet Exhaust Fan for HVAC Ventilation in Grow Tents, Basements, Bathrooms, Kitchens, and Attics

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Availability: In Stock.
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Arrives Monday, Jun 1
Order within 18 hours and 54 minutes
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Material Type: Plastic


Size: 4"& Speed Controller


Features

  • Powerful Airflow: Delivers strong airflow up to 130 CFM, efficiently enhancing ventilation and removing exhaust; Ideal for grow tents, greenhouses, basements, bathrooms, kitchens, attics, and workshops
  • High Efficiency: Equipped with an upgraded EC motor for powerful performance with low energy consumption, extended service life, and reduced maintenance costs
  • Quiet Operation: Runs at just 26dB(A), maintaining a peaceful environment without disrupting daily activities
  • Intuitive Speed Control: Intuitive Speed Control: The stepless speed regulator allows precise fan speed adjustments to match your specific needs
  • Durable and Safe: Built with sturdy ABS plastic housing and PBT blades for durability and resistance to deformation; Designed with a wide voltage range power adapter, low-voltage safety features, and stall protection to prevent hazards

Brand: VIVOSUN


Color: Black


Electric fan design: Blower


Power Source: ac_dc


Style: Industrial


Product Dimensions: 6.38"D x 3.86"W x 3.86"H


Room Type: Bathroom


Special Feature: Heavy Duty


Recommended Uses For Product: Air Circulation


Mounting Type: Wall Mount


Brand: VIVOSUN


Color: Black


Electric fan design: Blower


Power Source: ac_dc


Style: Industrial


Product Dimensions: 6.38"D x 3.86"W x 3.86"H


Room Type: Bathroom


Special Feature: Heavy Duty


Recommended Uses For Product: Air Circulation


Noise Level: 26 Decibels


Wattage: 40 watts


Finish Type: Unfinished


Air Flow Capacity: 130 Cubic Feet Per Minute


Item Weight: 0.53 Kilograms


Included Components: Cord


Indoor/Outdoor Usage: Indoor


Model Name: Plastic Booster Fan


Control Method: Push Button


Efficiency: High efficiency


Is Cordless?: No


Motor Type: Brushless


Manufacturer: VIVOSUN


Installation Type: wall-mounted


Size: 4"& Speed Controller


Item Weight: 1.17 pounds


Item model number: VSV-IFP4C


Date First Available: November 22, 2024


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If you place your order now, the estimated arrival date for this product is: Monday, Jun 1

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Top Amazon Reviews


  • It works for me in a harsh environment.
Material Type: Metal Size: 6"& No Speed Controller
I use this to extract heat from a portable A/C unit. I needed a fan with metallic blades due to heat. The heat it is exposed to will warp plastic fan blades. I was worried about the fan motor’s exposure to heat as well. This fan (in my application) is exposed to 145 degree internal duct heat for hours at a time which is right at the end of the motor’s advertised tolerance. It has been working without issues for over two months in Florida weather. I run it for as long as 6 hours straight, as needed. I use this fan to extract exhaust heat from a portable 9000 BTU A/C unit in my garage. This unit may also have use in a hurricane aftermath scenario (as in cooling a tent erected inside the house for sleeping (powered by a gas generator located OUTSIDE), if the power is out for weeks. This fan is hard mounted to a plate which I fabricated which seals the window opening completely. It can be removed from the window in less than 30 seconds. It also locks the window to help avoid entry from outside. I insulated the original flex duct with commercial grade insulation material used for A/C ducts in attics. The portable A/C unit is connected to the insulated duct, and then to this fan assembly at the window plate on the other end. The straight 4 foot duct run has two 45° elbows... this fan creates a vacuum in the duct to draw the heat outside better than the A/C u it could before. These portable A/C units are completely useless unless you facilitate the extraction of the heated air they produce. The uninsulated plastic exhaust ductwork they come with simply transfers all the heat the create right back into the room before it gets outside. It’s so hot in fact, it melts and distorts the window mount that comes with the A/C unit, allowing the heated air to literally blow back into the space you are trying to cool! It would heat and cool the garage simultaneously. Incredibly stupid and costly. To remedy, I insulated the exhaust duct from the A/C unit all the way up the the fan (at the window plate) in order to keep the heat in the duct, and not let it radiate back into the garage airspace. This fan sucks the hot air out. The window/fan mounting plate is made of 3/8 finish grade plywood, and painted with a two part epoxy, as to be waterproof and look nice. The fan is mounted to the plywood with a metal ring I fabricated using rivets, and it seals with a gasket. Control of the fan is manual, via the same power strip that supplies the A/C unit. The sound level is lower than the A/C unit’s noise output. The result: My garage can now reach 78°, with a 50% humidity level on a July day like today. Without the AC, the garage is 85% humidity, and 95°F. ... show more
Reviewed in the United States on July 18, 2019 by Johnny Mac

  • A little loud but they move air
Material Type: Metal Size: 6"& No Speed Controller
The media could not be loaded. I bought these to blow air up through new vents that I installed over my wood stove in the basement. The basement would get way too warm and the upstairs was too cold. I cut new vents through the floor and installed new duct work with these fans just before the floor vent. They blow so much warm air upstairs it is unbelievable. My only complaint is that they are a little loud but my main floor is now a comfy 70 degrees F and my basement is still a cozy 75 F. Would definitely buy again. ... show more
Reviewed in the United States on November 21, 2025 by Nate

  • it works well, but it is not quiet by any stretch of the imagination.
Material Type: Plastic Size: 6"& Speed Controller
the fan moves a lot of air, and the speed control is reasonably linear allowing for smooth speed adjustments thought-out its range without any spots that seem to not make much difference. it doesn't come with any means of attaching or hanging it at all, no strap, nothing!!! i grow veggies in the tent rather than weed like most here so i have no need for a carbon filter and a strap or mounting bracket would of been a nice addition. it's reasonably light weight so i installed it into one of the vent openings of a grow tent and just used the synch cords to secure it, it works well. i have it just to help with heat removal in the top of the tent when the lights are on, i keep the lower vents of the tent open all the time so there's a bit of natural thermal lift, but on hot days i had a little more temp climb than i liked. i have noticed that the room i have the tent in gets a good bit warmer with the tent venting into it so i have a 16ft 6" hose and it fit the fan perfectly, and i'll get a window vent to vent the heat outdoors. other than it being a bit noisy, it's a great addition to the grow tent. ... show more
Reviewed in the United States on January 4, 2026 by KC

  • Great little fan
Material Type: Plastic Size: 6"& Speed Controller
Moves a ton of air and at 50% its very quiet. I use mine as a circulation fan, when companies want to charge $50 for a dinky little clip fan that moves 20-45 cfm, get this instead. Worth every penny
Reviewed in the United States on February 8, 2026 by CJ

  • Running for over a year non-stop
Material Type: Metal Size: 4"& No Speed Controller
Works great. I’ve bought several of these. One failed after several months of 24/7 use, but the others have been running 24/7 for over a year with no issues.
Reviewed in the United States on February 16, 2026 by Coach Brant

  • As of Feb. 2026 I can’t find better in this form
Material Type: Plastic Size: 6"& Speed Controller
Smooth, quiet and strong. Efficient, the best I have used in this form factor. Thank you VIVOSUN for a quality product.
Reviewed in the United States on February 7, 2026 by Matthew C.

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