---
product_id: 509793751
title: "Inline Duct Fan, 4-Inch 205 CFM with Temperature Humidity Controller, Quiet EC-Motor Ventilation Exhaust Fan for Cooling Booster, Grow Tents, Hydroponics"
brand: "vevor"
price: "1200 kr"
currency: DKK
in_stock: true
reviews_count: 10
category: "Vevor"
url: https://www.desertcart.dk/products/509793751-inline-duct-fan-4-inch-205-cfm-with-temperature-humidity
store_origin: DK
region: Denmark
---

# 205 CFM airflow 28 dB ultra-quiet operation Auto temp & humidity control Inline Duct Fan, 4-Inch 205 CFM with Temperature Humidity Controller, Quiet EC-Motor Ventilation Exhaust Fan for Cooling Booster, Grow Tents, Hydroponics

**Brand:** vevor
**Price:** 1200 kr
**Availability:** ✅ In Stock

## Summary

> 🌬️ Elevate your air game with silent, smart ventilation!

## Quick Answers

- **What is this?** Inline Duct Fan, 4-Inch 205 CFM with Temperature Humidity Controller, Quiet EC-Motor Ventilation Exhaust Fan for Cooling Booster, Grow Tents, Hydroponics by vevor
- **How much does it cost?** 1200 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/509793751-inline-duct-fan-4-inch-205-cfm-with-temperature-humidity)

## Best For

- vevor enthusiasts

## Why This Product

- Trusted vevor brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Climate Control:** Intelligent variable speed adjusts automatically to temperature and humidity for perfect ventilation.
- • **Effortless Installation:** Includes hang-up slings, rubber mats, and straps for versatile mounting options—hang or wall-mount with ease.
- • **Energy-Savvy Performance:** EC motor saves 30% energy while delivering consistent, long-lasting power.
- • **Breathe Easy, Work Quietly:** Powerful 205 CFM airflow keeps your space fresh without the noise disruption.
- • **Versatile Ventilation Solution:** Ideal for grow tents, hydroponics, basements, kitchens, and more—upgrade your airflow game now.

## Overview

The VEVOR 4-Inch Inline Duct Fan delivers a robust 205 CFM airflow with whisper-quiet 28 dB operation, powered by an energy-efficient EC motor. Featuring an intelligent temperature and humidity controller, it automatically optimizes fan speed to maintain ideal environmental conditions. Designed for easy installation with included mounting accessories, this fan is perfect for hydroponics, grow tents, and versatile home ventilation needs.

## Description

desertcart.com: VEVOR Inline Duct Fan, 4-Inch 205 CFM with Temperature Humidity Controller, Quiet EC-Motor Ventilation Exhaust Fan for Cooling Booster, Grow Tents, Hydroponics : Patio, Lawn & Garden

Review: The perfect ventilation fan! - I purchased this 4" duct fan to be used as a ventilation fan in the attic of a second story room above a garage. I am going to be using the room as a gaming/man cave room and wanted a ventilation fan that I could adjust the speed of the fan and be unnoticeable when in the room. This fan works perfectly for the limited space I had to install it in and with the asthetically pleasing LCD controller, this fan met all criteria I had and then some. It gives accurate readings of the air temperature and humidity %. It also, of course, controls the fan speed with 10 program or manually selected speeds. On the lower speeds, the fan virtually cannot be heard which is exactly what I wanted. The higher speeds are noticably louder for obvious reasons but it really moves some air which is the whole purpose of this fan. It has been running continuously for a month now and works flawlessly. Overall, excellent choice for a variable speed duct fan with all the bells and whistles and the best part is, it's a fraction of the cost of similar type fans.
Review: Powerful and Quiet, but Controller Could Be Improved - I recently added the VEVOR Inline Duct Fan to my hydroponic setup, and I’m impressed with its performance. The 4-inch fan delivers an impressive 205 CFM, providing strong airflow that keeps my grow tent well-ventilated. It runs quietly, which is essential for my indoor environment, allowing me to focus on my plants without distractions. The integrated temperature and humidity controller is a nice feature, helping me maintain optimal conditions for my plants. It’s straightforward to set up, and having this control makes a big difference in ensuring my plants thrive. However, there are a couple of areas for improvement. While the fan is powerful, I found the controller’s sensitivity could be better calibrated; sometimes, it seems to react slowly to changes in temperature and humidity. Additionally, the fan could be a bit tricky to install in tight spaces due to its design. Overall, the VEVOR Inline Duct Fan is a solid choice for anyone looking to enhance ventilation in their grow tent or hydroponic system. Just be prepared to fine-tune the controller settings for the best results!

## Features

- 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 205 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 EC motor that ensures strong power at a low noise of 28 dB, which will not disturb your work and life. At the same time, the motor saves 30% on energy consumption, extending its service life.
- Take It Easy: You already have a busy life. Why make it even more complicated? Your new fan not only performs excellently but also values your time! VEVOR's inline air duct fan adopts an intelligent variable speed controller that automatically adjusts the optimal air speed according to the temperature and humidity, eliminating the need for constant attention and freeing your hands for convenient use.
- Everything You Need: To save time and costs, we provide a 4-inch inline fan with hang-up slings, and non-vibration rubber mats and straps, allowing you to effortlessly complete installation. Additionally, you are not restricted in how you install the high-quality duct fan. Choose between hanging it or mounting it on the wall.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BTNPTVG2 |
| Air Flow Capacity | 205 Cubic Feet Per Minute |
| Best Sellers Rank | #15,803 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #13 in Hydroponic Ventilation Equipment |
| Brand | VEVOR |
| Compatible Devices | Grow Tent |
| Cooling Method | Air |
| Customer Reviews | 4.3 4.3 out of 5 stars (691) |
| Item Weight | 6 pounds |
| Item model number | 4-Inch Inline Duct Fan |
| Manufacturer | VEVOR |
| Material | pp |
| Maximum Rotational Speed | 2900 RPM |
| Noise Level | 28 Decibels |
| Number of Items | 1 |
| Power Connector Type | Standard Power Cord |
| Product Dimensions | 12"L x 10"W x 9"H |
| UPC | 840281562596 |
| Voltage | 120 Volts (AC) |
| Wattage | 21 watts |

## Product Details

- **Brand:** VEVOR
- **Compatible Devices:** Grow Tent
- **Cooling Method:** Air
- **Material:** pp
- **Maximum Rotational Speed:** 2900 RPM
- **Noise Level:** 28 Decibels
- **Power Connector Type:** Standard Power Cord
- **Product Dimensions:** 12"L x 10"W x 9"H
- **Voltage:** 120 Volts (AC)
- **Wattage:** 21 watts

## Images

![Inline Duct Fan, 4-Inch 205 CFM with Temperature Humidity Controller, Quiet EC-Motor Ventilation Exhaust Fan for Cooling Booster, Grow Tents, Hydroponics - Image 1](https://m.media-amazon.com/images/I/61GeXCI4hjL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Q: Is this product suitable for grow tents?**
A: A: YES. Know the size of the ducting before choosing the fan as well. Our inline duct fan comes with the option of different sizes.

**Q: Q: Can it be used indoors?**
A: A: YES. It helps a lot with air circulation, as well as with odors and dampness. You'll have no problem finding one that suits your living rooms, studios, and electronic equipment rooms. Very quiet too.

**Q: Q: Is this fan durable?**
A: A: YES. Our fan can reach 30,000 hours of continuous operation. Energy efficient EC-motor ensures ultra stable operation.

## Customer Reviews

### ⭐⭐⭐⭐⭐ The perfect ventilation fan!
*by J***. on May 2, 2023*

I purchased this 4" duct fan to be used as a ventilation fan in the attic of a second story room above a garage. I am going to be using the room as a gaming/man cave room and wanted a ventilation fan that I could adjust the speed of the fan and be unnoticeable when in the room. This fan works perfectly for the limited space I had to install it in and with the asthetically pleasing LCD controller, this fan met all criteria I had and then some. It gives accurate readings of the air temperature and humidity %. It also, of course, controls the fan speed with 10 program or manually selected speeds. On the lower speeds, the fan virtually cannot be heard which is exactly what I wanted. The higher speeds are noticably louder for obvious reasons but it really moves some air which is the whole purpose of this fan. It has been running continuously for a month now and works flawlessly. Overall, excellent choice for a variable speed duct fan with all the bells and whistles and the best part is, it's a fraction of the cost of similar type fans.

### ⭐⭐⭐⭐⭐ Powerful and Quiet, but Controller Could Be Improved
*by D***N on September 25, 2024*

I recently added the VEVOR Inline Duct Fan to my hydroponic setup, and I’m impressed with its performance. The 4-inch fan delivers an impressive 205 CFM, providing strong airflow that keeps my grow tent well-ventilated. It runs quietly, which is essential for my indoor environment, allowing me to focus on my plants without distractions. The integrated temperature and humidity controller is a nice feature, helping me maintain optimal conditions for my plants. It’s straightforward to set up, and having this control makes a big difference in ensuring my plants thrive. However, there are a couple of areas for improvement. While the fan is powerful, I found the controller’s sensitivity could be better calibrated; sometimes, it seems to react slowly to changes in temperature and humidity. Additionally, the fan could be a bit tricky to install in tight spaces due to its design. Overall, the VEVOR Inline Duct Fan is a solid choice for anyone looking to enhance ventilation in their grow tent or hydroponic system. Just be prepared to fine-tune the controller settings for the best results!

### ⭐⭐⭐⭐⭐ Excellent product
*by G***F on January 18, 2026*

Excellent product and quality. It's been running almost non stop since day 1. Better instructions would be a huge help. I ordered the 750 cfm one for another project. Very happy and highly recommend

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-03-02*