---
product_id: 464967529
title: "AC Infinity Duct Silencer, 6\" Inline Muffler with Neoprene Foam"
brand: "ac infinity"
price: "A$235"
currency: AUD
in_stock: true
reviews_count: 6
category: "Ac Infinity"
url: https://www.desertcart.com.au/products/464967529-ac-infinity-duct-silencer-6-inline-muffler-with-neoprene-foam
store_origin: AU
region: Australia
---

# 6-inch duct diameter 50% noise reduction corrosion-resistant galvanized steel AC Infinity Duct Silencer, 6" Inline Muffler with Neoprene Foam

**Brand:** ac infinity
**Price:** A$235
**Availability:** ✅ In Stock

## Summary

> 🔇 Silence your space, amplify your focus.

## Quick Answers

- **What is this?** AC Infinity Duct Silencer, 6" Inline Muffler with Neoprene Foam by ac infinity
- **How much does it cost?** A$235 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/464967529-ac-infinity-duct-silencer-6-inline-muffler-with-neoprene-foam)

## 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

- • **Perfect Fit:** Universal 6-inch duct diameter fits most inline fans seamlessly.
- • **Built to Last:** Durable galvanized steel body resists corrosion and extreme temps.
- • **Optimized Airflow:** Minimal 10% airflow reduction keeps your environment fresh and efficient.
- • **Whisper-Quiet Performance:** Slash fan noise by up to 50% with advanced neoprene foam tech.
- • **Vibration Absorbing Design:** Dual aluminum flanges absorb sound waves for ultra-quiet airflow.

## Overview

The AC Infinity Inline Duct Fan Silencer is a premium 6-inch muffler designed to reduce fan noise by up to 50% using high-quality neoprene foam and dual aluminum flanges. Its corrosion-resistant galvanized steel body ensures durability under extreme conditions, making it ideal for hydroponic grow tents, HVAC systems, and indoor ventilation. Despite a slight 10% airflow reduction, it maintains efficient ventilation while significantly lowering noise levels.

## Description

AC Infinity Inline Duct Fan Silencer, 150mm Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems, 6-Inch : desertcart.co.uk: Garden

Review: Noise dropped to 63db (almost half audible). - My house air filtration system incorporates Merv13 + hepa + carbon cylinder + RAM 150mm fan + 8 meters of ducting. The noise at the outlet was 73db. Installed the silencer about halfway in line. Noise dropped to 63db (almost half audible). Unfortunately, air flow reduced by 10% - in my system went down from 3.0 m/s (85 m³/h) to 2.7 m/s (76 m³/h). Note that my RAM is rated at 517 m³/h, and the real life readings are due to multiple filters restricting. The airflow is just about enough for two people.
Review: I installed it in my basement to reduce noice between basement room and the kitchen. Works great, I noticed significant reduction

## Features

- A duct muffler designed for use with inline fans in grow tents, bathroom fans and other HVAC applications.
- Features dual aluminum flanges to help absorb sound waves from fan vibrations and airflow.
- High-quality neoprene foam in an egg crate pattern that will reduce fan noise by up to 50%.
- Galvanized steel body that is corrosion-resistant and can withstand extreme temperatures.
- Duct Opening Diameter: 6 inches | Length: 12.87 inches | Weight: 3.90 pounds

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0829F2VXP |
| Best Sellers Rank | 35,642 in Garden ( See Top 100 in Garden ) 25 in Hydroponic Ventilation Equipment |
| Brand | AC Infinity |
| Colour | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (314) |
| Date First Available | 29 July 2022 |
| Item Weight | 2 kg |
| Model Number | AC-DSA6 |
| Package Dimensions | 43.81 x 25.73 x 25.73 cm; 2 kg |

## Product Details

- **Brand:** AC Infinity
- **Inlet connection size:** 6 Inches
- **Item weight:** 2 Kilograms
- **Material:** Aluminium
- **Shape:** Oval

## Images

![AC Infinity Duct Silencer, 6" Inline Muffler with Neoprene Foam - Image 1](https://m.media-amazon.com/images/I/51m3e8LonJL.jpg)

## Questions & Answers

**Q: does this get installed before the fane for after the Fan and how far?**
A: I've installed one before and one after - directly on the fan.  I ultimately returned the one before the fan because the improvement was relatively minor.

**Q: Can you connect these mufflers in series? And what impact does that have?  e.g. one reduces 50% two reduces 75% ... and so forth?**
A: I don’t think they can be used end to end but you can put one on either side of the fan and that should reduce the sound.... or if you’d like you can put one directly against the fan and then add another one at the end of a duct as well. I can’t give you any specific numbers though.

**Q: Can I simple insert this silencer (not fan) before my output in my home music studio?**
A: The openings on each side is 4" in diameter. 
I'm not sure exactly what your affixing this to but if it's similar to any duct opening you'll need a clamp or coupler. Hope this helps!

**Q: Will this work on a radon fan system?**
A: i dont know about a radon but ive used a hyperfan and it fits perfect. ive also used one of those cheap vivosun ones with the red fan blades and it is about a quarter inch smaller than the flange on th muffler. it does work well though.

## Customer Reviews

### ⭐⭐⭐⭐ Noise dropped to 63db (almost half audible).
*by M***T on 7 September 2025*

My house air filtration system incorporates Merv13 + hepa + carbon cylinder + RAM 150mm fan + 8 meters of ducting. The noise at the outlet was 73db. Installed the silencer about halfway in line. Noise dropped to 63db (almost half audible). Unfortunately, air flow reduced by 10% - in my system went down from 3.0 m/s (85 m³/h) to 2.7 m/s (76 m³/h). Note that my RAM is rated at 517 m³/h, and the real life readings are due to multiple filters restricting. The airflow is just about enough for two people.

### ⭐⭐⭐⭐⭐ Review
*by G***B on 5 January 2025*

I installed it in my basement to reduce noice between basement room and the kitchen. Works great, I noticed significant reduction

### ⭐⭐⭐ Review
*by S***M on 7 July 2023*

didn't do that much on high speed but for low speed did some worth mentioning the 6 inch came black ( it's a new model ) i think it's much better but easily get scratched

## Frequently Bought Together

- AC Infinity Inline Duct Fan Silencer, 6" Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems
- 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
- AC Infinity CLOUDLINE PRO T6, Quiet 6” Inline Duct Fan with Temperature Humidity VPD Controller, WiFi Integrated App Control - Ventilation Exhaust Fan for Heating Cooling, Grow Tents, Hydroponics

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-21*