TURBRO AirSupply ES4, 4 Inch Inline Duct Fan with Solid Metal Case, 195 CFM Quiet Vent Fan with Variable Speed Controlled for Grow Tent and Ventilation
Airsupply ES4 Inline Duct Fan
SKU: 707-AS-EC100 In Stock

Regular price $99.99 $79.99 SAVE $20.00

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【Outstanding Performace】 Utilizing the cutting edge brushless EC motor, ES4 performs 30% more efficiently than the AC motor powered duct fan but reduce up to 60% power consumption. It delivers 195 CFM airflow with 5000 RMP high speed and 335 strong pressure using only 18 watts. 

【Fully Adjustable & Quiet Running】The 0 - 100% variable speed controller allows you to effectively increase or decrease airflow speed from zero to a hundred percent without generating additional noise or hum. 

【Reasonable Construction】Mounting ES4 in the small grow tents can save much space with its compact design (unit size: 6.3 x 7.3 x 5.9 in). Engineered with airtight steel housing and IPX44 protection, ES4 doesn't afraid of the harsh elements as well as resist accidental damage.

【Easy to Use】You just need to mount the vent fan and controller without any parts assembly. Thanks to the permanently lubricated bearing, you get rid of maintenance. 

【Multiple Applications】ES inline fan is designed for air circulation in hydroponic grow tents, smell and moisture removal in bathrooms, and cooling AV racks. It's also applied in the industrial workshop to remove smoke and odors.

The AirSupply 4 Inch Duct Fan helps with all of your ventilation issues. The ES4 inline fan increases the centrifugal airflow vortex of your ventilation system to remove heat and humidity from grow tents, electronic equipment closets, and industrial workspaces. The airflow direction is reversible and can be used to intake fresh air into space or exhaust hot air or fumes from your space. It can even be used to pull air through odor-reducing carbon filters in grow tents.

Compared to old-school AC or DC motors, our brushless DC (also known as EC motor) and variable speed controller lets you precisely control your fan speed from 0-100% to increase efficiency while reducing noise and power consumption. With easy installation and reduced maintenance from the pre-lubricated bearings, the TURBRO AirSupply ES4 Inline Duct Fan will provide constant airflow for years to come.

√ Energy Efficient - Consumes up to 60% less power
√ Compact Design - Yet Powerful Ventilation with 195 CFM air flow at 5,000 RPM
√ Brushless DC Motor - Quiet Operation, Lasts 3x longer than AC motors
√ Variable Speed Controller - 0 to 100% speed control in 1% increments
√ Multiple Mounting Options - Hardware kit included for wall mounting

Package Includes:
1× 4'' Duct Fan (with a 6 ft. power cable and 3-prong plug)
1× Speed Controller (with 16-ft cable)
1× Installation Kit (Includes screws and anchors)


  • Model: ES4
  • Duct Size: 4 Inches
  • Air Flow: 195 CFM
  • Rated Speed: 5,000 RPM
  • Maximum Pressure: 335 Pa
  • Noise Level: ≤ 37 dB
  • Speed Controller: Potentiometer 0-100%
  • Environment Requirements: 15-140 °F, 15-93% RH
  • Water Proof: IP44
  • Certification: ETL Listed
  • Power Supply: 120V, 60Hz
  • Rated Power: 18 W
  • Current: 0.16 A
  • External Material: Aluminum Alloy
  • Weight: 2.7 lbs
  • Dimension: 6.26 x 7.24 x 5.91 in

    Customer Reviews

    Based on 52 reviews
    Good Value for the Price

    Using this to vent fumes when soldering. I like that it’s small enough that I can mount it on the wall with only push pins. Lightweight but sturdy. I would have given it five stars but it’s a little loud. It does the job. There’s no smell at all in my room after soldering.

    Vann Campbell
    It clears the air and circulates well.

    I use this in my production trailer. Heat and humidity can build up inside of the trailer. I attached this to the existing fresh air vent. It creates enough pressure, to keep fresh air flowing through. That was none of my speakers or anything else gets damaged. The stale air goes out through the exhaust vent. You can actually feel the air move in and out of the vents.

    YW L.
    Powerful but energy efficient

    I have been looking for a 4 inch ventilation fan for a while. After comparing quite a few, I finally bought this one. The ES4 inline duct fan delivers an airflow of 195 CFM at 5000 RPM with only 18 watts of power. I also like the aluminum alloy external case. To me the speed controller is not a must-have feature, but certainly very nice to adjust the air flow.

    For a 4 inch inline duct fan, 195 CFM is excellent to ventilate my basement and help reduce the humidity level. I am happy with this purchase.

    Steve S.
    This thing is awesome

    This thing is awesome. I'm a professional blacksmith and bought this because my old blower was dying fast. This thing is quiet, blows way more air than I expected but also holds up to being switched on and off repeatedly in a 12 to 14hr day.

    My project

    Amazing fan and it is what am looking for my exhaust ,easy installation and work perfect for my project of renovation
    Thank so much and I am recommend