---
product_id: 454258093
title: "CLOUDLINE S6, Quiet 6” Inline Duct Fan with Speed Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics"
brand: "ac infinity"
price: "$495.82"
currency: USD
in_stock: true
reviews_count: 6
category: "Ac Infinity"
url: https://www.desertcart.us/products/454258093-cloudline-s6-quiet-6-inline-duct-fan-with-speed-controller
store_origin: US
region: United States of America
---

# 32 dBA ultra-quiet 10-speed PWM control 402 CFM airflow CLOUDLINE S6, Quiet 6” Inline Duct Fan with Speed Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics

**Brand:** ac infinity
**Price:** $495.82
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your air game—quiet, powerful, and in total control.

## Quick Answers

- **What is this?** CLOUDLINE S6, Quiet 6” Inline Duct Fan with Speed Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics by ac infinity
- **How much does it cost?** $495.82 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/454258093-cloudline-s6-quiet-6-inline-duct-fan-with-speed-controller)

## Best For

- ac infinity enthusiasts

## Why This Product

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

## Key Features

- • **Whisper-Quiet Power:** Operates at a barely-there 32 dBA, perfect for focused work or stealthy grow tent ventilation.
- • **Energy-Smart EC Motor:** PWM-controlled EC motor maximizes efficiency while minimizing heat and noise output.
- • **Versatile Compatibility:** Works seamlessly with all UIS controllers for intelligent, automated climate management.
- • **Precision Airflow Control:** 10-stage wired fan controller lets you dial in the exact airflow you need—no more, no less.
- • **High-Resistance Airflow Mastery:** Mixed-flow design with stator blades and hydrodynamic wind circles powers through tough ventilation challenges.

## Overview

The CLOUDLINE S6 is a 6-inch inline duct fan engineered for whisper-quiet, energy-efficient ventilation. Delivering 402 CFM airflow at just 32 dBA noise, it features a 10-speed PWM fan controller and a mixed-flow motor design optimized for high-resistance environments. Ideal for grow tents, HVAC boosting, and AV cooling, it supports advanced UIS controller integration for smart climate management.

## Description

Features 10-speed manual control with PWM. See T series for temperature and humidity control.

Review: Good quality. Very quiet. - Good quality. Very quiet.
Review: パワー感は、どうかな？ と、いった感じです。

## Features

- Designed to quietly ventilate grow tents, transfer heating/cooling into rooms, circulate air, drain odors, and cool AV racks.
- Features a wired 10 stage fan controller; also compatible with all UIS controllers with intelligent programming.
- The PWM controlled EC motor ensures quiet and energy efficient operation with minimal heat generation and noise.
- The mixed-flow design with stator blades and hydrodynamic wind circles allows air supply in high resistance areas.
- Channel Size: 6" | Dimensions: 7.9 x 12.6 x 8.4 inches | Airflow: 402 CFM | Noise Level: 32 dBA | Bearing: Double Ball Bearings

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07FPFVZTZ |
| Customer Reviews | 4.7 4.7 out of 5 stars (9,632) |
| Date First Available | 19 August 2018 |
| Item model number | CLOUDLINE S6 |
| Manufacturer | AC Infinity |
| Material type | Plastic |
| Part number | AI-CLS6 |
| Power source type | Corded Electric |
| Product Dimensions | 21.34 x 20.07 x 32 cm; 0.28 g |

## Product Details

- **Brand:** AC Infinity
- **Colour:** black
- **Electric fan design:** Exhaust Fan
- **Mounting type:** Wall Mount
- **Power source:** Corded Electric
- **Product dimensions:** 20.1D x 21.3W x 32H centimeters
- **Recommended uses for product:** Cooling
- **Room type:** Kitchen
- **Special features:** Remote Controlled
- **Style:** Pro Speed Controller

## Images

![CLOUDLINE S6, Quiet 6” Inline Duct Fan with Speed Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics - Image 1](https://m.media-amazon.com/images/I/515G8psanuL.jpg)

## Available Options

This product comes in different **Material Type, Style** options.

## Questions & Answers

**Q: What is the range of cfm output, at different settings? can i bring it down as low as 100 cfm?**
A: Hi there, 

Thank you for reaching out to us!

Below I have provided an approximate breakdown of the CFM for the fan on each different speed. 

44 / 88 / 132 / 176 / 220 / 264 / 308 / 351

Kind regards, 

Kenny Ngo
AC Infinity

**Q: Does the fan come with a pressure switch?**
A: No just fan speed

**Q: Is the impeller on fan made of plastic or metal?**
A: is the outer tube made of metal for kitchen hood

**Q: Can I use a T6 intake with an S8 exhaust and fancy controller or will the smart controller only work with the same size ducts?**
A: Duct size should not matter

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality. Very quiet.
*by C***D on 11 January 2025*

Good quality. Very quiet.

### ⭐⭐⭐⭐ Review
*by D***N on 29 November 2021*

パワー感は、どうかな？ と、いった感じです。

### ⭐⭐⭐⭐⭐ Review
*by A***Z on 3 June 2020*

The brand is one of the better manufacturers selling to the general public and the vendor was very supportive and provided prompt service. I would buy from them again and recommend the inline fan without hesitation. It’s quiet at lower settings and works without issue.

## Frequently Bought Together

- AC Infinity CLOUDLINE PRO S6, Quiet 6” Inline Duct Fan with Speed Controller - EC Motor Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics
- AC Infinity Flexible 6-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust
- AC Infinity Noise Reduction Clamp 6-Inch, Duct Coupler with Stainless Steel Clamps, Flexible Rubber Coupling for Inline Fans and Carbon Filters in Growing and HVAC

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-08*