does this get installed before the fane for after the Fan and how far?

I've installed one before and one after - directly on the fan. I ultimately returned the one before the fan because the improvement was relatively minor.

Can you connect these mufflers in series? And what impact does that have? e.g. one reduces 50% two reduces 75% ... and so forth?

I don’t think they can be used end to end but you can put one on either side of the fan and that should reduce the sound.... or if you’d like you can put one directly against the fan and then add another one at the end of a duct as well. I can’t give you any specific numbers though.

Can I simple insert this silencer (not fan) before my output in my home music studio?

The openings on each side is 4" in diameter. I'm not sure exactly what your affixing this to but if it's similar to any duct opening you'll need a clamp or coupler. Hope this helps!

Will this work on a radon fan system?

i dont know about a radon but ive used a hyperfan and it fits perfect. ive also used one of those cheap vivosun ones with the red fan blades and it is about a quarter inch smaller than the flange on th muffler. it does work well though.

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AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems

AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems

Product ID: 452115487

Details

Brand
AC Infinity
Configuration
Dual/Dual
Item Weight
1.04 kg
Material
Alloy Steel
Shape
Round

🔇50% noise reduction

🌬️4-inch duct diameter

🛡️corrosion-resistant steel

R$2268

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Description

🔇 Silence your space, amplify your focus.

SEAMLESS FIT - Dual aluminum flanges absorb vibrations and ensure easy installation.
BUILT TO LAST - Durable galvanized steel body resists corrosion and extreme temps.
OPTIMIZED AIRFLOW - Egg crate foam design muffles sound without sacrificing ventilation.
VERSATILE APPLICATION - Perfect for grow tents, HVAC, AV rooms, and bathroom ventilation.
WHISPER QUIET PERFORMANCE - Cut fan noise by up to 50% with advanced neoprene foam tech.

The AC Infinity Inline Duct Fan Silencer is a premium 4-inch muffler designed to reduce fan noise by up to 50% using high-grade neoprene foam and dual aluminum flanges. Its galvanized steel body ensures durability against corrosion and temperature extremes, making it ideal for hydroponic grow tents, HVAC systems, and quiet home or office environments.

Specifications

ASIN	B0829GJ5Q7
Best Sellers Rank	#920,034 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #1,213 in Exhaust Fans
Brand	AC Infinity
Brand Name	AC Infinity
Configuration	Dual/Dual
Country of Origin	USA
Customer Reviews	4.5 out of 5 stars 192 Reviews
Global Trade Identification Number	00819137021051
Item Shape	Round
Item Weight	2.3 Pounds
Manufacturer	AC Infinity
Manufacturer Part Number	AC-DSA4
Material	Alloy Steel , Aluminium
Material Type	Alloy Steel, Aluminium
Model	AC-DSA4
Shape	Round
UPC	819137021051
Unit Count	1.0 Count

Reviews

T**I

Macht was er soll 👍👍

Der Rohrschalldämpfer ist von hoher Qualität und senkt den Geräuschpegel merklich ab - geschätzt 25 % weniger - er macht also was er soll, daher eine klare Kaufempfehlung von mir 👍

18.10.2025

S**U

As described prompt post to Aus

As described prompt post well securely packed would buy from again

21.09.2022

P**N

Pas très brouillant

Tres bien conçu et robuste

9.07.2026

M**S

Excellent

Top carbon filter

20.05.2026

R**S

Works

Definitely makes it a bit quieter

22.10.2025

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R$2268

Duties & taxes included

In stock

Sold byAmazon BrazilDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Brazil.

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