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AC Infinity 4" Duct Silencer

  • Reduces fan and airflow noise levels by up to 50%
  • Egg-crate neoprene foam interior absorbs sound waves without restricting airflow
  • 15-inch total length fits 4-inch duct lines and standard inline fans
  • 2-year warranty, does not cover non-durable or consumable goods
  • View More Details
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THROUGH THE Cultivator's LENS Hands-On Evaluation

Who This Is For

  • You are installing a silencer because the high-pitched whine of your 4-inch fan makes working in the room distracting.
  • You are adding sound dampening because you need to keep your ventilation discreet enough to blend in with home noise.

What We Found

  • The egg-crate foam catches sound much better than flat liners, especially when your fan is running at full tilt.
  • Reversible flanges are a lifesaver when you need to flip the unit to fit into a tight corner of a ventilation line.

What Users Say

  • Users who added this to bedroom closet setups say they can finally sleep without hearing the exhaust fan cycle.
  • Growers working in small rooms tell us it cut the roar enough to have a normal conversation while they prune.

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.

Happy To Help

Questions About This Product?

Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)

Call (360) 800-5535

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