---
title: What is and why use sound attenuator tubing?
description: The core of the sound attenuator tubing is composed of spun nylon, which is then covered with insulation and an outer jacket made of Mylar. The purpose
---
[Skip to content](https://helpcenter.unicosystem.com/knowledge/what-is-and-why-use-sound-attenuator-tubing#main-content)
English
Show submenu for translations
![Unico-logo-4c.png\]](https://helpcenter.unicosystem.com/hs-fs/hubfs/Unico-logo-4c.png?height=40&name=Unico-logo-4c.png)
- [Default HubSpot Blog](https://theoutlet.unicosystem.com/blog)
Open main navigation
Close main navigation
- [Default HubSpot Blog](https://theoutlet.unicosystem.com/blog)
- English
Show submenu for translations
- Go to www.unicosystem.com
Go to www.unicosystem.com
Hello. How can we help you?
- There are no suggestions because the search field is empty.
1. [Unico Help Center & Resources](https://helpcenter.unicosystem.com/knowledge?hsLang=en)
2. [Frequently Asked Questions](https://helpcenter.unicosystem.com/knowledge/frequently-asked-questions?hsLang=en)
3. [Professional FAQs](https://helpcenter.unicosystem.com/knowledge/frequently-asked-questions?hsLang=en#professional-faqs)
# What is and why use sound attenuator tubing?
The core of the sound attenuator tubing is composed of spun nylon, which is then covered with insulation and an outer jacket made of Mylar. The purpose of the Mylar is to act as a vapor barrier and maintain the pressure inside the duct.
If the sound level at the outlet is a significant concern, it is essential to utilize the sound attenuator. To prevent the occurrence of air noise, it is recommended to use a minimum of 3 feet of sound attenuator tubing before the outlet.
The attenuator tubing is available in 12-foot lengths, and if desired, the full length can be utilized.
- [Frequently Asked Questions](https://helpcenter.unicosystem.com/knowledge/frequently-asked-questions?hsLang=en#main-content)
- [Homeowner FAQs](https://helpcenter.unicosystem.com/knowledge/frequently-asked-questions?hsLang=en#homeowner-faqs)
- [Professional FAQs](https://helpcenter.unicosystem.com/knowledge/frequently-asked-questions?hsLang=en#professional-faqs)
- [Technical Specifications](https://helpcenter.unicosystem.com/knowledge/technical-specifications?hsLang=en#main-content)
- [10 - General Information](https://helpcenter.unicosystem.com/knowledge/technical-specifications?hsLang=en#10-general-information)
- [20 - Engineering Specifications](https://helpcenter.unicosystem.com/knowledge/technical-specifications?hsLang=en#20-engineering-specifications)
- [30 - Installation & Maintenance](https://helpcenter.unicosystem.com/knowledge/technical-specifications?hsLang=en#30-installation-maintenance)
- [40 - Application & Sizing](https://helpcenter.unicosystem.com/knowledge/technical-specifications?hsLang=en#40-application-sizing)
- [Technical Notes](https://helpcenter.unicosystem.com/knowledge/technical-specifications?hsLang=en#technical-notes)
- [Replacement Guides](https://helpcenter.unicosystem.com/knowledge/replacement-guides?hsLang=en)
- [Drawings & Submittals](https://helpcenter.unicosystem.com/knowledge/drawings-submittals?hsLang=en#main-content)
- [Blower Modules (1 - 5 ton)](https://helpcenter.unicosystem.com/knowledge/drawings-submittals?hsLang=en#blower-modules-1-5-ton)
- [Coil Modules (1 - 5 ton)](https://helpcenter.unicosystem.com/knowledge/drawings-submittals?hsLang=en#coil-modules-1-5-ton)
- [Vertical Up Flow FCU](https://helpcenter.unicosystem.com/knowledge/drawings-submittals?hsLang=en#vertical-up-flow-fcu)
- [Accessories](https://helpcenter.unicosystem.com/knowledge/drawings-submittals?hsLang=en#accessories)
- [Obsolete Parts](https://helpcenter.unicosystem.com/knowledge/obsolete-parts?hsLang=en#main-content)
- [Discontinued Parts Bulletins](https://helpcenter.unicosystem.com/knowledge/obsolete-parts?hsLang=en#discontinued-parts-bulletins)
- [Discontinued Parts Drawings & Submittals](https://helpcenter.unicosystem.com/knowledge/obsolete-parts?hsLang=en#discontinued-parts-drawings-submittals)
- [Videos](https://helpcenter.unicosystem.com/knowledge/videos?hsLang=en#main-content)
- [Why Choose a Unico System](https://helpcenter.unicosystem.com/knowledge/videos?hsLang=en#why-choose-a-unico-system)
- [Installation](https://helpcenter.unicosystem.com/knowledge/videos?hsLang=en#installation)
- [Product](https://helpcenter.unicosystem.com/knowledge/videos?hsLang=en#product)
- [UnicoSales App Help](https://helpcenter.unicosystem.com/knowledge/unicosales-app-help?hsLang=en#main-content)
- [How the UnicoSales App Works](https://helpcenter.unicosystem.com/knowledge/unicosales-app-help?hsLang=en#how-the-unicosales-app-works)
- [Setup Questions](https://helpcenter.unicosystem.com/knowledge/unicosales-app-help?hsLang=en#setup-questions)
- [General FAQ's](https://helpcenter.unicosystem.com/knowledge/unicosales-app-help?hsLang=en#general-faqs)
- [Contractors](https://helpcenter.unicosystem.com/knowledge/unicosales-app-help?hsLang=en#contractors)
- [Distributors](https://helpcenter.unicosystem.com/knowledge/unicosales-app-help?hsLang=en#distributors)
- [Rep Companies](https://helpcenter.unicosystem.com/knowledge/unicosales-app-help?hsLang=en#rep-companies)
- [Default HubSpot Blog](https://theoutlet.unicosystem.com/blog)
[](https://www.unicosystem.com)
Help Center
Copyright © 2026, Unico Inc.