AC Infinity 4-inch duct silencer with black mufflers and silver body.

Diagram of an AC Infinity duct silencer, highlighting aluminum flanges, neoprene foam, steel body, and circular shape.

Diagram showing egg crate foam muffling sound waves within a duct silencer.

AC Infinity 4-inch duct silencer in grow tent with lettuce plants.

AC Infinity 4" duct silencer with dimensions: 6.97" diameter, 11.96" length, 3.94" width, 14.96" height.

AC Infinity 4-inch duct silencer, rectangular metal noise reducer with black connectors,

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AC Infinity 4" Duct Silencer

Price:

$49.99 USD

Pay as little as
$4999/mo

for a term that suits you, up to 36 months.

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MODEL: AC-DSA4

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AC Infinity 4" Duct Silencer

Tired of the constant hum from your ventilation system? The AC Infinity 4" Duct Silencer is engineered to dramatically reduce fan noise, creating a quieter and more comfortable environment for your grow space or home. By absorbing sound waves from both the fan and airflow, it can cut noise levels by up to 50%, transforming your setup into a whisper-quiet operation.

Built with a rugged galvanized steel body and high-quality neoprene foam, this silencer is designed for maximum durability and performance. It integrates seamlessly into your existing ventilation line, making it a simple yet highly effective upgrade. For a complete, quiet ventilation solution, pair it with an AC Infinity Cloudline T4 inline fan and compatible 4-inch flexible ducting.

Features

🤫

Maximum Noise Absorption

Features egg-crate patterned neoprene foam that effectively reduces fan noise by up to 50%.

🔇

Sound Dampening Design

Dual aluminum flanges absorb sound waves generated by fan vibrations and high-velocity airflow.

💪

Built to Last

Constructed with a galvanized steel body that resists corrosion and withstands extreme temperatures.

✅

Simple Setup

Easily fits between your inline fan and ducting for a seamless, hassle-free installation.

Specifications

Specification	Value
Duct Opening Size	4"
Total Dimensions	14.96 x 6.97 in. (38.0 x 17.7 cm)
Flange Length	1.50 in. (3.8 cm)
Flange Material	Stainless Steel
Flange Design	Reversible
Shell Material	Galvanized Steel
Foam Material	Neoprene Foam

Warranty

This AC Infinity product is protected by a two-year warranty. Please note this does not cover non-durable or consumable goods. All sales are final.

FAQs

How much noise does this actually reduce?+

It's designed to reduce fan and airflow noise by up to 50%, creating a much quieter environment for your grow space or home.

Is this silencer compatible with my fan?+

This 4" silencer is designed to fit standard 4-inch inline duct fans and ducting. It pairs perfectly with systems like the AC Infinity Cloudline T4.

What is it made of?+

It features a durable, corrosion-resistant galvanized steel body, stainless steel flanges, and high-density neoprene foam with an egg-crate pattern for superior sound absorption.

How do I install it?+

Installation is straightforward. The silencer is placed in your duct line, typically right after the inline fan, and connects seamlessly with your existing 4-inch flexible ducting.

Can I use this for applications other than a grow tent?+

Yes, absolutely. This duct silencer is effective for any HVAC application, including home theaters, workshops, or any room where ventilation noise is a concern.

Where can I learn more about setting up AC Infinity ventilation?+

For a comprehensive overview of setting up ventilation systems, check out our in-depth guide on AC Infinity kits, which covers fans, filters, and more.

Shipping & Returns

Order Processing & Shipping

We currently ship within the United States only. No international shipping is available at this time.

Order Processing:

Most orders are processed within 24-48 hours after being placed.

Some products may have extended processing times of 7-14 business days or more, which will be clearly indicated on the product page. If your order includes such items, you will receive an email from our team or be contacted directly to confirm the estimated shipping timeframe.

Shipping Times:

We partner with reliable national carriers to deliver your orders. While specific delivery times can vary, here's a general timeframe for each carrier:

USPS: Typically delivers between 9:00 AM and 5:00 PM, Monday through Saturday.
FedEx: Typically delivers between 8:00 AM and 8:00 PM, Monday through Friday, with some Saturday deliveries.
UPS: Typically delivers between 9:00 AM and 7:00 PM, Monday through Friday, with some Saturday deliveries.

Note:

These are estimated delivery hours and may vary depending on your location and specific delivery circumstances.
For the most accurate delivery information, please refer to the tracking details provided once your order has shipped.

Free Shipping

Free shipping on qualified items to the lower 48 states. Some that are not eligible are stated on their respective product information page. Learn more

Refunds & Returns

Cancellations are accepted within 24 hours of placing an order.
Returns are subject to each manufacturer's return policy. Please look into the return policy of the brand prior to ordering. Learn more

AC Infinity 4" Duct Silencer