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, 100mm Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems, 4-Inch

AC Infinity Inline Duct Fan Silencer, 100mm Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems, 4-Inch

Product ID: 457705435

Details

Brand
AC Infinity
Configuration
Dual/Dual
Item weight
2.3 Pounds
Material
Aluminium
Shape
Round

📏Fits 100mm (4-inch) duct openings

🔇Up to 50% noise reduction

🛡️Corrosion-resistant galvanized steel

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Description

🔇 Silence is the new power move — upgrade your airflow game!

PRECISION FIT - Designed for 100mm (4-inch) duct openings with dual aluminum flanges that absorb vibration and airflow noise.
BUILT TO ENDURE - Galvanized steel body resists corrosion and withstands extreme temperatures, ensuring long-lasting reliability.
LIGHTWEIGHT COMPACT - At just 1 kg and 38.1 cm length, it integrates seamlessly without adding bulk or weight to your setup.
VERSATILE APPLICATION - Perfect for indoor hydroponics, grow tents, bath fans, and other ventilation systems demanding silent operation.
WHISPER QUIET PERFORMANCE - Neoprene egg crate foam slashes fan noise by half, creating a peaceful environment for your grow tent or HVAC setup.

The AC Infinity Inline Duct Fan Silencer is a high-quality, 4-inch noise reduction muffler designed to cut fan noise by up to 50% using neoprene egg crate foam and dual aluminum flanges. Its galvanized steel construction offers corrosion resistance and durability under extreme conditions, making it ideal for hydroponic grow tents, HVAC, and bath fan ventilation systems.

Specifications

ASIN	B0829GJ5Q7
Best Sellers Rank	111,581 in Garden ( See Top 100 in Garden ) 50 in Hydroponic Ventilation Equipment
Brand	AC Infinity
Brand Name	AC Infinity
Configuration	Dual/Dual
Country Of Origin	China
Customer Reviews	4.5 out of 5 stars 186 Reviews
Global Trade Identification Number	00819137021051
Item Shape	Round
Item Weight	2.3 Pounds
Item weight	2.3 Pounds
Manufacturer	AC INFINITY
Manufacturer Part Number	AC-DSA4
Material	Aluminium alloy steel
Material Type	Aluminium alloy steel
Model Number	AC-DSA4
Shape	Round
UPC	819137021051
Unit Count	1.0 count

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AC Infinity Inline Duct Fan Silencer, 100mm Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems, 4-Inch

Details

Details

Description

Specifications

Reviews

Common Questions