AC Infinity Inline Duct Fan Silencer, 6" Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems
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Availability:
In Stock.
Arrives
Saturday, Aug 30
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Size: 6"
Features
- A duct muffler designed for use with inline fans in grow tents, bathroom fans and other HVAC applications.
- Features dual aluminum flanges to help absorb sound waves from fan vibrations and airflow.
- High-quality neoprene foam in an egg crate pattern that will reduce fan noise by up to 50%.
- Galvanized steel body that is corrosion-resistant and can withstand extreme temperatures.
- Duct Opening Diameter: 6 inches | Length: 20 inches | Weight: 3.90 pounds
Brand: AC Infinity
Shape: Round
UPC:
Manufacturer: AC Infinity
Global Trade Identification Number: 68
Package Dimensions : 17.7 x 10.3 x 10.1 inches; 4.4 Pounds
Item model number : AC-DSA6
Date First Available : December 24, 2019
Manufacturer : AC Infinity
Best Sellers Rank: #37,128 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #31 in Greenhouse Ventilation Equipment
#31 in Greenhouse Ventilation Equipment:
Customer Reviews: 4.5 4.5 out of 5 stars 694 ratings
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Aug 30
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: 4"
Easy to install and instantly quieter.
Reviewed in the United States on August 18, 2025 by Ethan
Size: 8"
I’m using this for residential crypto mining with an 8 inch S8 fan. It is crazy loud, but still quieter than the fans on the mining ASIC. Before buying this, it was just too loud to run at night, costing me income. The fan needs to be at least on level 8 during the day to cool the hash boards, and that is really loud in a residential area. For grow tents, you probably won’t need to run it at level 8 unless you need a jet intake in your tent for some reason. This is perfect. It is so effective that I can run the fan at 7, maybe 8, even at night. It also doesn’t restrict the air flow much at all, and temperatures are not affected. I have an 8 inch duct filter on the end, and it’s even more quiet. Oh yeah, and don’t use duct tape. It defeats the purpose a little since sound will get through the joints. AC Infinity sells 8 inch silencer clamps which is a tube of thick rubber and a clamp at each end. Not only is this more secure and cuts down on sound, but they make your setup look really clean. Another clamp was needed for my filter, just fyi. Note: if you really want this in silver, you may need to request it. Mine came in black, but still looks great.
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Reviewed in the United States on November 1, 2023 by scuba steve scuba steve
Size: 8"
It really cuts down the noise from the fan, I can run it two settings higher with this. To my ear the tone sounds better too
Reviewed in the United States on May 24, 2025 by Kacey Green
Size: 4"
I had wondered when the description said it "will reduce fan noise by up to 50%" whether this meant the sound power was reduced by 50%, a 3-dB reduction in power, which would be hardly noticiable, or it it meant the apparent sound was cut in half, which is more like a 10-dB reduction in sound power (hearing is non-linear). I can report that it appears to be more like the latter, since the noise reduction is significant.
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Reviewed in the United States on October 21, 2024 by Rick
Size: 6"
Why did you pick this product vs others?: Works well
Reviewed in the United States on July 6, 2025 by Brian
Size: 6"
We had a booster fan added to our house HVAC system, to move more air into the back of the house. The booster fan was super loud coming out of the vent in our bedroom. The HVAC contractor offered to replace our rigid duct with flexible, which supposedly reduces noise. I also bought this and asked the guys to install it while they replaced the duct. The final result: almost completely silent, but we still get lots of air. I'm not sure if it was the flex duct, this, or both, but I'm willing to give this credit.
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Reviewed in the United States on August 20, 2025 by jingles
Size: 4"
What's that noise is not what you're going to say after installing a silencer on both ends of your inline. Coupled with noise reduction clamps to have you trying to figure out if you're hearing the inline or the clip on AC Infinity Cloudrays. Easy to install, nice snug fit with the AC Infinity noise reduction clamps, heavy duty feel with the performance and luxurious look of AC Infinity products. Recommended for those that want a quiter growing experience.
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Reviewed in the United States on May 20, 2024 by Jason Maxey Jason Maxey
Size: 6"
Does what it's made for , making the fan quiet so you can sleep and or the neighbors don't hear
Reviewed in the United States on February 27, 2025 by Greensnapper