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.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Inline Duct Fan Silencer 4", Noise Reduction Muffler

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 opening for max airflow

🛡️corrosion-resistant galvanized steel

TT$2747

Duties & taxes included

In stock

Sold byAmazon Trinidad and TobagoDelivered 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 Trinidad and Tobago.

Secure transaction

Description

🔇 Silence your space, amplify your focus.

BUILT TO LAST - Durable galvanized steel body resists corrosion and extreme temps.
EFFORTLESS INSTALLATION - Compact 4-inch diameter and 15-inch length fits standard inline duct fans.
WHISPER QUIET PERFORMANCE - Cut fan noise by up to 50% with advanced neoprene foam tech.
VERSATILE VENTILATION SOLUTION - Perfect for grow tents, HVAC, bathroom fans, and AV cooling setups.
SEAMLESS FIT SOUND ABSORPTION - Dual aluminum flanges absorb vibrations for ultra-smooth airflow.

The AC Infinity Inline Duct Fan Silencer 4" is engineered to reduce fan noise by up to 50% using high-grade neoprene foam and dual aluminum flanges. Its corrosion-resistant galvanized steel body withstands extreme temperatures, making it ideal for grow tents, HVAC systems, and home ventilation. Designed for 4-inch duct openings, it ensures maximum airflow while creating a quieter, more comfortable environment.

Specifications

ASIN	B0829GJ5Q7
Best Sellers Rank	#1,934,381 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #2,068 in Exhaust Fans
Brand Name	AC Infinity
Configuration	Dual/Dual
Country of Origin	USA
Customer Reviews	4.5 4.5 out of 5 stars (193)
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 Shape	Round
Item Weight	1.04 kg
Manufacturer	AC Infinity
Manufacturer Part Number	AC-DSA4
Material Type	Alloy Steel, Aluminium
Model	AC-DSA4
Number of Items	1
UPC	819137021051
Unit Count	1.0 Count

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.