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

AC Infinity Inline Duct Fan Silencer 4", Noise Reduction Muffler

Product ID: 177166705

Details

Brand
AC Infinity
Item Weight
2.3 pounds
Manufacturer
AC Infinity
UPC
819137021051

📏4" duct diameter, 15" length

🔇50% noise reduction

🛡️corrosion-resistant galvanized steel

1488 DH

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Description

🔇 Silence your space, amplify your focus.

BUILT TO LAST - Durable galvanized steel body resists corrosion and extreme temps
PRECISION FIT - Optimized 4-inch duct opening for seamless HVAC integration
VERSATILE APPLICATION - Perfect for grow tents, bathroom fans, and all inline duct systems
WHISPER QUIET PERFORMANCE - Cut fan noise by up to 50% with advanced neoprene foam tech
VIBRATION ABSORBING DESIGN - Dual aluminum flanges dampen sound waves from fan vibrations

The AC Infinity Inline Duct Fan Silencer 4" is engineered to reduce fan noise by up to 50% using high-quality egg crate neoprene foam and dual aluminum flanges. Its corrosion-resistant galvanized steel body ensures durability under extreme conditions, making it ideal for grow tents, bathroom ventilation, and HVAC systems. With a precise 4-inch duct diameter and 15-inch length, it offers a perfect fit for inline fans, delivering quieter, more efficient airflow.

Specifications

ASIN	B0829GJ5Q7
Best Sellers Rank	#35,566 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #26 in Greenhouse Ventilation Equipment
Brand Name	AC Infinity
Customer Reviews	4.5 4.5 out of 5 stars (774)
Global Trade Identification Number	00819137021051
Item Highlight	Silencer for 4" Inline Duct Fans, Aluminum and Galvanized Steel Build, Indoor Hydroponics Grow Tent Ventilation Systems
Item Weight	2.3 pounds
Manufacturer	AC Infinity
Manufacturer Part Number	AC-DSA4
Model Number	AC-DSA4
Number of Items	1
UPC	819137021051
Unit Count	1 Count

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1488 DH

Duties & taxes included

In stock

Sold byAmazon MoroccoDelivered 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 Morocco.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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