---
product_id: 177166705
title: "AC Infinity Inline Duct Fan Silencer 4\", Noise Reduction Muffler"
brand: "ac infinity"
price: "A$146"
currency: AUD
in_stock: true
category: "Ac Infinity"
url: https://www.desertcart.com.au/products/177166705-ac-infinity-inline-duct-fan-silencer-4-noise-reduction-muffler
store_origin: AU
region: Australia
---

# 4" duct diameter, 15" length 50% noise reduction corrosion-resistant galvanized steel AC Infinity Inline Duct Fan Silencer 4", Noise Reduction Muffler

**Brand:** ac infinity
**Price:** A$146
**Availability:** ✅ In Stock

## Summary

> 🔇 Silence is the new power move.

## Quick Answers

- **What is this?** AC Infinity Inline Duct Fan Silencer 4", Noise Reduction Muffler by ac infinity
- **How much does it cost?** A$146 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/177166705-ac-infinity-inline-duct-fan-silencer-4-noise-reduction-muffler)

## 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

- • **Built to Last:** Durable galvanized steel body resists corrosion and extreme temps.
- • **Precision Fit:** Optimized 4-inch duct opening ensures seamless HVAC integration.
- • **Versatile Application:** Perfect for grow tents, sound booths, bathrooms, and HVAC systems.
- • **Whisper-Quiet Performance:** Cut fan noise by up to 50% with advanced neoprene foam tech.
- • **Vibration Absorbing Flanges:** Dual aluminum flanges minimize disruptive fan vibrations.

## Overview

The AC Infinity Inline Duct Fan Silencer 4" is engineered to slash fan noise by up to 50% using high-quality neoprene foam and dual aluminum flanges. Its corrosion-resistant galvanized steel body withstands harsh environments, making it ideal for grow tents, sound booths, and HVAC setups. With a precise 4-inch duct diameter and 15-inch length, it delivers quiet, efficient airflow while enhancing your workspace comfort and productivity.

## Description

desertcart.com: AC Infinity Inline Duct Fan Silencer 4", Noise Reduction Muffler | Silencer for 4" Inline Duct Fans, Aluminum and Galvanized Steel Build, Indoor Hydroponics Grow Tent Ventilation Systems : Patio, Lawn & Garden

## 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: 4 inches | Length: 15 inches | Weight: 2.30 pounds

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0829GJ5Q7 |
| Best Sellers Rank | #35,566 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #26 in Greenhouse Ventilation Equipment |
| Brand Name | AC Infinity |
| Customer Reviews | 4.5 4.5 out of 5 stars (774) |
| Global Trade Identification Number | 00819137021051 |
| Item Highlight | Silencer for 4" Inline Duct Fans, Aluminum and Galvanized Steel Build, Indoor Hydroponics Grow Tent Ventilation Systems |
| Item Weight | 2.3 pounds |
| Manufacturer | AC Infinity |
| Manufacturer Part Number | AC-DSA4 |
| Model Number | AC-DSA4 |
| Number of Items | 1 |
| UPC | 819137021051 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** AC Infinity
- **Item Weight:** 2.3 pounds
- **Manufacturer:** AC Infinity
- **UPC:** 819137021051

## Images

![AC Infinity Inline Duct Fan Silencer 4", Noise Reduction Muffler - Image 1](https://m.media-amazon.com/images/I/51AYf5JWdAL.jpg)
![AC Infinity Inline Duct Fan Silencer 4", Noise Reduction Muffler - Image 2](https://m.media-amazon.com/images/I/31T0EXr994L.jpg)
![AC Infinity Inline Duct Fan Silencer 4", Noise Reduction Muffler - Image 3](https://m.media-amazon.com/images/I/416lkqpV-TL.jpg)
![AC Infinity Inline Duct Fan Silencer 4", Noise Reduction Muffler - Image 4](https://m.media-amazon.com/images/I/41jrWUg6nGL.jpg)
![AC Infinity Inline Duct Fan Silencer 4", Noise Reduction Muffler - Image 5](https://m.media-amazon.com/images/I/41vvOvipsdL.jpg)

## Available Options

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

## 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.

## Frequently Bought Together

- AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems
- AC Infinity Noise Reduction Clamp 4-Inch, Duct Coupler with Stainless Steel Clamps, Flexible Rubber Coupling for Inline Fans and Carbon Filters in Growing and HVAC
- AC Infinity CLOUDLINE PRO T4, Quiet 4” 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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**Shop now:** [https://www.desertcart.com.au/products/177166705-ac-infinity-inline-duct-fan-silencer-4-noise-reduction-muffler](https://www.desertcart.com.au/products/177166705-ac-infinity-inline-duct-fan-silencer-4-noise-reduction-muffler)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-09-19*