Model # DM106

Internet #202803671

Store SO SKU #1000120806

0066028001061

Suncourt

6 in. In-Line Duct Muffler

$ 86 56

Overview

The DuctMuffler 6 in. In-Line Noise Muffler reduces noise from fans and carbon filter systems. Excellent noise reduction for HVAC systems, fans and hydroponics applications. Does Not Restrict Airflow through duct. Maintenance free and easy to install.
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Frequently Bought Together

Frequently Bought Together

Product Overview

The DuctMuffler 6 in. In-Line Noise Muffler reduces noise from fans and carbon filter systems. Excellent noise reduction for HVAC systems, fans and hydroponics applications. Does Not Restrict Airflow through duct. Maintenance free and easy to install.
  • Fits 6 in. flex or metal ducts
  • Meets NFPA standards 90A and 90B
  • Acoustic liner UL listed, class 1 air duct
  • Building code compliant

Product Overview

Model #: DM106
Internet #: 202803671

The DuctMuffler 6 in. In-Line Noise Muffler reduces noise from fans and carbon filter systems. Excellent noise reduction for HVAC systems, fans and hydroponics applications. Does Not Restrict Airflow through duct. Maintenance free and easy to install.

  • Fits 6 in. flex or metal ducts
  • Meets NFPA standards 90A and 90B
  • Acoustic liner UL listed, class 1 air duct
  • Building code compliant

Info & Guides

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Specifications

Dimensions

Product Depth (in.)
8
Product Height (in.)
8.0
Product Width (in.)
24

Details

Brand/Model Compatibility
Suncourt
HVAC application
All HVAC types
Product Weight (lb.)
6.25lb
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
1 Year Limited

Specifications

Dimensions

Product Depth (in.)
8
Product Height (in.)
8.0
Product Width (in.)
24

Details

Brand/Model Compatibility
Suncourt
HVAC application
All HVAC types
Product Weight (lb.)
6.25lb
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
1 Year Limited

Questions & Answers

does this muffler go in-front of fan booster or after the booster in the direction of air-flow?

does this muffler go in-front of fan booster or after the booster in the direction of air-flow?
Asked by: Arlington
I put it close to the vent in the room that was noisy regardless of the air flow.
Answered by: Scooter
Date published: 2018-03-01

Capacity Spec

I have a 650 CFM Blower and want to silence the exhaust side of it. How many CFM of air flow will this muffler handle?
Asked by: EagleIdaho
Much less. You need a 12" device for 650. And 12" duct. If you try to push too much air, you'll get more noise.
Answered by: CSpencer
Date published: 2019-05-10

could this be used to deaden sound from a music room?

could this be used to deaden sound from a music room?
Asked by: Strat
Yes if the sound is traveling through the duct work.
Answered by: Suncourt Product Expert
Date published: 2019-05-10
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Customer Reviews

6 in. In-Line Duct Muffler is rated 4.4 out of 5 by 7.
Rated 5 out of 5 by from Works good for knocking down heat register air noise Bought 2 of these to knock down the air noise created by my furnace that is located in my attic along with my duct work. Because of this, all of my heat/air registers are located in the ceiling using flexible ducting. My house is on a slab. Using a Noise Meter app on my phone, the registers had a decibel level of 30dB at about six feet under the register and three feet to the side. For comparison, the room is 20dB without the air noise. I installed the mufflers in the attic as close to the output registers as possible. In my case about one foot away. The air noise dropped 5dB's to 25dB's. The 5dB drop was a very noticeable difference for us. Our living room is now much quieter. I am buying two more to install in other rooms. They were fairly easy to install considering that my attic is more of a crawl space than anything else.
Date published: 2013-04-15
Rated 5 out of 5 by from Had a noise problem from the fan in our heat... Had a noise problem from the fan in our heat recovery ventilation unit. Installed this in the supply duct near the ventilation unit and the fan noise coming through the duct work was reduced to a barely noticeable level. Very satisfied.
Date published: 2018-12-11
Rated 4 out of 5 by from Good bang for the buck I built a home recording studio and used the in-line mufflers to improve sound insulation between the rooms. They reduce HVAC noise quite effectively, but don't make a big difference for sound transmission of loud noises between the rooms. Overall good bang for the buck. Good for home applications, but no professional product.
Date published: 2013-04-09
Rated 4 out of 5 by from It does muffle sound but dont expect it to kill it all together. I think the instructions say to ... It does muffle sound but dont expect it to kill it all together. I think the instructions say to install it for the room that you want to be more quiet. But I installed it in the room that was noisy so I don't need a $100 device for every room. It does help. Be awarethat you may need reducers and/or couplings to fit it depending on your duct sizes. I did. My only real complaint is that it's not availbabel in Canada. By the way, the website to fill in this survey uses grey text on white background Exreamly hard ot see.
Date published: 2017-02-04
Rated 5 out of 5 by from I had previously installed a 425 CFM in-line centrifugal fan with a speed control to supply a new... I had previously installed a 425 CFM in-line centrifugal fan with a speed control to supply a new sunroom. It worked fine but made too much noise in all the other house registers. I installed this muffler per instructions and tested it with a sound level meter. The meter showed no measurable difference between fan on (at 75% speed) and fan off in our kitchen, the loudest area. "Per instructions" includes a 2-foot space between the fan and the muffler. If it is too close, some of the sound will shoot straight past the acoustic material. As if you couldn't tell, I am by no means a professional. This type of install requires some skill, and really needs a helper. The muffler is heavy enough that it needs direct support, not just the ductwork itself.
Date published: 2016-11-26
Rated 5 out of 5 by from Easy to install, it baffled the noise, not completely but that was expected, as this has no baffl... Easy to install, it baffled the noise, not completely but that was expected, as this has no baffles. I needed to quiet my new Carrier furnace because its loud. And this worked.
Date published: 2018-01-02
Rated 3 out of 5 by from It did make the fan sound quieter, but the fan was still definitely audible. I was expecting the... It did make the fan sound quieter, but the fan was still definitely audible. I was expecting the fan sound to be quieter than it was after the muffler was installed. I said I wouldn't recommend the product because I don't think it quieted the fan sound enough to be worth the cost.
Date published: 2017-01-17
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