---
product_id: 386637054
title: "MARS HYDRO 4 Inch Inline Fan and Filter with Temperature and Humidity Controller, Carbon Filter, 33ft Length Flex ducting, 3 Duct Clamps"
brand: "mars hydro"
price: "€ 405.32"
currency: EUR
in_stock: true
reviews_count: 13
category: "Mars Hydro"
url: https://www.desertcart.be/products/386637054-mars-hydro-4-inch-inline-fan-and-filter-with-temperature
store_origin: BE
region: Belgium
---

# 28 dB ultra-quiet Temp & humidity control 205 CFM airflow MARS HYDRO 4 Inch Inline Fan and Filter with Temperature and Humidity Controller, Carbon Filter, 33ft Length Flex ducting, 3 Duct Clamps

**Brand:** mars hydro
**Price:** € 405.32
**Availability:** ✅ In Stock

## Summary

> 🌿 Breathe Easy, Grow Smart — The Ultimate Climate Command Center

## Quick Answers

- **What is this?** MARS HYDRO 4 Inch Inline Fan and Filter with Temperature and Humidity Controller, Carbon Filter, 33ft Length Flex ducting, 3 Duct Clamps by mars hydro
- **How much does it cost?** € 405.32 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/386637054-mars-hydro-4-inch-inline-fan-and-filter-with-temperature)

## Best For

- mars hydro enthusiasts

## Why This Product

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

## Key Features

- • **Complete Ventilation Kit:** Includes 4-inch inline fan, carbon filter, 33ft flex ducting, and 3 duct clamps for seamless, all-in-one setup.
- • **Precision Climate Control:** Intelligent digital controller programs temperature, humidity, fan speed, timer, and alarms for flawless environment management.
- • **Powerful Yet Whisper-Quiet:** 205 CFM airflow with durable brushless motor and dual ball bearings delivers robust ventilation at a barely-there 28 dB noise level.
- • **Effortless Installation & Maintenance:** Removable duct ends with locking tabs and 4.9 ft cord length make setup and upkeep hassle-free and fast.
- • **Optimized for Grow Rooms & AV Closets:** Specifically designed to keep hydroponic tents and sensitive AV equipment cool, fresh, and odor-free.

## Overview

This 4-inch inline fan kit from MARS HYDRO combines a powerful 205 CFM brushless motor with ultra-quiet 28 dB operation, integrated digital temperature and humidity controller, and a carbon filter. Designed for hydroponic grow tents and AV closets, it includes 33 feet of flexible ducting and duct clamps for quick installation and maintenance, delivering precise environmental control and superior air quality.

## Description

Product Description Why doesn't the iController have a power plug? Simply plug it into an RJ12 port to power it up. Why doesn't the iController have a power plug? Simply plug it into an RJ12 port to power it up. Is that a UK plug? Yes, it's a UK plug. Is that a UK plug? Yes, it's a UK plug.

Review: Good for even bigger tents. - Great system, does what it says. Keeping a 180x120x60 tent cool and smell free. the app is really handy and once its all set up your temp and humidity can be automated pretty easily. tutorials on youtube are all you need for the controller or app, but would be handy to have a proper instruction manual for this in the box. Even in this size tent it sucks the sides of it in when its on full power, quiet but not the quietest, though its probably as quiet as it can be for its power. On low power its virtually silent. seems really well built and fits the tent nicely.
Review: Nice and quite - Cheap and worth the money

## Features

- Grow Tent Fan: Designed to ventilate hydroponic grow rooms, transfer heating/cooling, circulate air, and cool AV closets.
- Multifunction: Ventilation Exhaust Fan with Intelligent Temperature Humidity Controller programming, fan speed control, timer, and alarm system, More Effective ventilation for your planting
- Low Noise Level: Durable plastic fan housing and blades for extremely low noise(28 dB), create a truly quiet growth environment.
- Easy Installation: Removable duct ends with locking tabs for quick removal and easy maintenance and a cord length of 4.9 feet for hassle free setup.
- Ventilation Exhaust Fan Size: 4” | Dimensions: 11.9 x 8 x 7.4 in. | Weight: 4lb. | Airflow: 205 CFM | Noise: 28 dBA | Bearings: Dual Ball

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08RZ3WH7N |
| Air Flow Capacity | 205 Cubic Feet Per Minute |
| Best Sellers Rank | 17,238 in Garden ( See Top 100 in Garden ) 12 in Hydroponic Ventilation Equipment |
| Brand | MARS HYDRO |
| Brand Name | MARS HYDRO |
| Collection Name | Inline Fans |
| Colour | Black |
| Control Method | App |
| Country of Origin | China |
| Customer Reviews | 4.1 out of 5 stars 257 Reviews |
| Electric Fan Design | Exhaust Fan |
| Electric fan design | Exhaust Fan |
| Finish Type | Powder Coated |
| Included Components | 4 inch inline duct fan, digital controller, carbon filter, 25 feet flex ducting, 3 duct clamps |
| Indoor Outdoor Usage | Indoor |
| Installation Type | installable |
| Is Product Cordless | No |
| Item Weight | 1.81 Kilograms |
| Manufacturer | MARS HYDRO |
| Material | Plastic |
| Model Name | 4 inch inline fan kit-CP |
| Model Number | 4 inch inline fan kit-CP |
| Motor Type | Brushless |
| Mounting Type | Clip-on/Clamp Mount |
| Noise Level | 28 Decibels |
| Number of Power Levels | 1 |
| Part Number | 4 inch inline fan kit-CP |
| Power Source | Corded Electric |
| Power source | Corded Electric |
| Size | 4" Digital Controller |
| Smart Home Compatibility | Not Smart Home Compatible |
| Special Features | Digital controller with temperature and humidity programming, speed control, timer and alarm system |
| Special feature | Digital controller with temperature and humidity programming, speed control, timer and alarm system |
| Speed | 2600 RPM |
| Standby Power Shutoff | High |
| Style | Carbon Filter |
| Unit Count | 1.0 count |
| Voltage | 12 Volts |
| Wattage | 50 watts |

## Product Details

- **Brand:** MARS HYDRO
- **Colour:** Black
- **Electric fan design:** Exhaust Fan
- **Material:** Plastic
- **Mounting type:** Clip-on/Clamp Mount
- **Noise level:** 28 Decibels
- **Power source:** Corded Electric
- **Special feature:** Digital controller with temperature and humidity programming, speed control, timer and alarm system
- **Style:** Carbon Filter
- **Wattage:** 50 watts

## Images

![MARS HYDRO 4 Inch Inline Fan and Filter with Temperature and Humidity Controller, Carbon Filter, 33ft Length Flex ducting, 3 Duct Clamps - Image 1](https://m.media-amazon.com/images/I/71n1y5ON0RL.jpg)
![MARS HYDRO 4 Inch Inline Fan and Filter with Temperature and Humidity Controller, Carbon Filter, 33ft Length Flex ducting, 3 Duct Clamps - Image 2](https://m.media-amazon.com/images/I/71lm3tL1YsL.jpg)
![MARS HYDRO 4 Inch Inline Fan and Filter with Temperature and Humidity Controller, Carbon Filter, 33ft Length Flex ducting, 3 Duct Clamps - Image 3](https://m.media-amazon.com/images/I/71A9pEnbLXL.jpg)
![MARS HYDRO 4 Inch Inline Fan and Filter with Temperature and Humidity Controller, Carbon Filter, 33ft Length Flex ducting, 3 Duct Clamps - Image 4](https://m.media-amazon.com/images/I/61VQvb5nhaL.jpg)
![MARS HYDRO 4 Inch Inline Fan and Filter with Temperature and Humidity Controller, Carbon Filter, 33ft Length Flex ducting, 3 Duct Clamps - Image 5](https://m.media-amazon.com/images/I/71Fo-jZe7AL.jpg)

## Available Options

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

## Questions & Answers

**Q: Why doesn't the iController have a power plug?**
A: Simply plug it into an RJ12 port to power it up.

**Q: Is that a UK plug?**
A: Yes, it's a UK plug.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good for even bigger tents.
*by J***E on 9 May 2026*

Great system, does what it says. Keeping a 180x120x60 tent cool and smell free. the app is really handy and once its all set up your temp and humidity can be automated pretty easily. tutorials on youtube are all you need for the controller or app, but would be handy to have a proper instruction manual for this in the box. Even in this size tent it sucks the sides of it in when its on full power, quiet but not the quietest, though its probably as quiet as it can be for its power. On low power its virtually silent. seems really well built and fits the tent nicely.

### ⭐⭐⭐⭐⭐ Nice and quite
*by D***N on 10 May 2026*

Cheap and worth the money

### ⭐⭐⭐⭐⭐ Brilliant product
*by G***N on 28 March 2026*

Excellent service, brilliant product well worth the money

## Frequently Bought Together

- MARS HYDRO 4 Inch Inline Fan and Filter, with Temperature and Humidity Controller, and 25 Feet Ducting, Exhaust Fan for Grow Tents, Hydroponics
- MARS HYDRO TS1000 150W LED Grow Light for Indoor Plants, with Patented Reflector, 5 Levels Dimmable Lights Daisy Chain Full Spectrum Growing Lamps for Seedlings Veg Bloom in 2x2/3x3 Grow Tent

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-07-17*