AC Infinity

AC Infinity Noise Reduction Clamp 6-Inch Duct Coupler with Stainless Steel Clamps Flexible Rubber Coupling for Inline Fans

$16.99

109+ bought in the past month

About this item

  • Rubber pipe coupling designed to securely pair ducted components together while preventing air leaks.
  • Matte black rubber construction is flexible, heavy-duty, and can easily fit over duct ports and piping.
  • Minimizes noise by absorbing sound waves from fan vibrations and airflow traveling through ductwork.
  • Creates an airtight seal and hold using adjustable stainless steel hose clamps with worm drive locks.
  • 6 inch coupler fits inline fans and carbon filters with solid duct ports in growing and HVAC settings.
$16.99

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Technical specifications
manufacturerAC Infinity
item_weight10.9 ounces
package_dimensions9.92 x 7.68 x 2.95 inches
size6inch
item_package_quantity1
batteries_includedNo
batteries_requiredNo
best_sellers_rank#10,272 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #12 in HVAC Ducting
date_first_availableJuly 14, 2022

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Customer reviews

4.7944 ratings
  1. 588%
  2. 413%
  3. 30%
  4. 20%
  5. 10%

Customers say

Customers find the noise reduction clamp to be well-built, with one noting its solid stainless steel construction. Customers appreciate its easy installation, nice thick rubber material, and good fit.

★★★★★

great clamp for grow room exhaust

WillDecember 30, 2025✓ Verified purchase

Not sure on the noise reduction portion but its a solid clamp and works well connecting my exhaust fan and the charcoal filter. been sitting solid for a few months now and unless the fan is running at 80% or higher you don't hear anything in the room or while walking past it. It doesn't obstruct the airflow and I feel like its pretty durable and will outlast my filter. Read more

★★★★★

Solid product that helps with noise cancellation.

Sam11BFebruary 24, 2026✓ Verified purchase

Another good quality product from AC infinity. I used this to connect my inline fan to the filter and silencer and outlet. Read more

★★★★★

Worth every penny!

Jason B.February 3, 2026✓ Verified purchase

A MUST have to connect filter and fan!! Never again will I use duct tape!!! Took forever to get the already sealed tape off my filter/fan. Clamp was easy to install & fits like a glove. And it definitely reduces noise! It's not going to silence the fan; But I can definitely tell a "significant" difference! Can turn the fan up higher before hearing it as much, and even then it's still quieter than before. Read more

★★★★★

AC Infinity products are the best

NathanSeptember 8, 2024✓ Verified purchase

I got this for a 4" exhaust fan in a small grow box and it works great. I have it in between the fan and a carbon filter. The rubber is very thick and does a great job of reducing noise from vibrations of the fan. The clamps that come with it are solid and keep a tight seal on the fan and filter. All of their products are fairly priced and this is no exception. Quality product at a great price makes this a must have. Nothing to dislike about this product whatsoever. Read more

★★★★★

Superior product, installs easily, holds well

StormRuneDecember 13, 2025✓ Verified purchase

Superior product, installs easily, holds well. I originally bought just two for installing the fan itself, but liked using them so much I bought three more to simplify other joins in the welding exhaust ducting I was constructing Read more

★★★★★

Fits well but kind of expensive

Henry WNovember 4, 2025✓ Verified purchase

Definitely needed.If you want to secure your inline fan to the filter without using tape. Works well super functional, easy to install it's only two screws. I believe it is a bit pricey though. Read more

★★★★☆

For metal ductwork

Leo GuggenbillerMarch 1, 2026✓ Verified purchase

This is for solid ductwork. It worked okay for my flexible duct. Read more

★★★★★

BEAUTIFUL!

JacobFebruary 6, 2026✓ Verified purchase

Probably the best coupler I have ever used! Read more

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