--- product_id: 177166705 title: "AC Infinity Inline Duct Fan Silencer, 4\" Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems" brand: "ac infinity" price: "£63.21" currency: GBP in_stock: true reviews_count: 13 category: "Ac Infinity" url: https://www.desertcart.co.uk/products/177166705-ac-infinity-inline-duct-fan-silencer-4-noise-reduction-muffler store_origin: GB region: United Kingdom --- # 4" duct diameter 50% noise reduction corrosion-resistant steel AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems **Brand:** ac infinity **Price:** £63.21 **Availability:** ✅ In Stock ## Summary > 🔇 Silence your space, amplify your focus. ## Quick Answers - **What is this?** AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems by ac infinity - **How much does it cost?** £63.21 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/177166705-ac-infinity-inline-duct-fan-silencer-4-noise-reduction-muffler) ## Best For - ac infinity enthusiasts ## Why This Product - Trusted ac infinity brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seamless Fit:** Precision 4-inch duct diameter ensures easy integration with inline fans and HVAC systems. - • **Built to Last:** Galvanized steel body resists corrosion and extreme temps for long-term reliability. - • **Versatile Application:** Perfect for grow tents, bathroom fans, and even residential crypto mining setups. - • **Whisper-Quiet Performance:** Slash fan noise by up to 50% with premium neoprene foam tech. - • **Vibration Absorbing Design:** Dual aluminum flanges dampen fan vibrations for ultra-smooth airflow. ## Overview The AC Infinity Duct Silencer is a 4-inch inline muffler engineered to reduce fan noise by up to 50% using high-quality neoprene foam and dual aluminum flanges. Its galvanized steel construction ensures durability against corrosion and extreme temperatures, making it ideal for grow tents, HVAC systems, and noise-sensitive environments. Lightweight and easy to install, it maintains airflow efficiency while delivering whisper-quiet operation. ## Description Product description Product Description A ventilation ducting tool designed to dampen or reduce noise coming from airflow in grow tent or server closet ventilation systems. It utilizes high-grade neoprene foam crafted in a wave crest pattern that diminishes sound wave movement, reducing noise pollution by up to 50%. The egg crate foam muffles sound vibration while allowing maximum airflow passthrough for both intake and exhaust configurations. Both aluminum flange openings also assist in absorbing sound waves from vibrations, seamlessly fitting over your inline duct fan’s flange. Each silencer is built with a solid galvanized steel body that is corrosion-resistant and can withstand extreme temperature changes. Applications The duct silencer is often paired with inline extractor fans in grow tents and hydroponic grow room applications. It can be installed anywhere in the ventilation system chain like in between the fan and ducting. The silencer can also be used in many home HVAC applications including AV equipment room cooling, closet cooling, and bathroom ventilation. This creates a comforting home environment that is quieter and more relaxing, or a workplace that is less distracting. Duct Silencer An inline duct silencer designed to reduce noise from active exhaust fans. Eliminates noise level by up to 50% by absorbing acoustic vibrations caused by air movement. Superior Noise Suppression for a Quieter Space Whether you are ventilating a grow tent or a server room, inline fans produce a sound that may draw unwanted attention as well as disturb your housemates, family, or even your neighbors. By using this silencer, you create a quieter and more relaxing environment by diminishing the noise output of your fan or rushing air. Vibration Reduction This silencer features aluminum flanges on both ends that fit your existing fan or ducting to help diminish sound waves coming from fan vibrations. Sound Absorption As sound travels through the chamber's foam, it's dampened by the wave crest form, cutting noise output from rushing air or the fan by up to 50%. Complete Passthrough With no obstructions in the silencer chamber and an egg crate pattern foam, air can be taken in or exhausted with no impact on CFM. Sturdy and Durable Body A strong, long-lasting body made of galvanized steel that is lightweight, resistant to corrosion and can take on extreme cold or heat. Review: Highly effective - 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. AC Infinity sells 8 inch silencer clamps which is a tube of thick rubber and a clamp at each end. This cuts down on sound and they make your setup look really clean. Another clamp was needed for my filter, just fyi. They are not the most secure things though, especially because the fan shrouds are plastic and flex a bit. Note: if you really want this in silver, you may need to request it. Mine came in black, but still looks great. Review: It's a muffler and a great one - Great quality and it works for sure quiets the sound like after a muffler ## 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: 4 inches | Length: 15 inches | Weight: 2.30 pounds ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0829GJ5Q7 | | Best Sellers Rank | #65,747 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #54 in Greenhouse Ventilation Equipment | | Brand | AC Infinity | | Brand Name | AC Infinity | | Customer Reviews | 4.5 out of 5 stars 763 Reviews | | Global Trade Identification Number | 00819137021051 | | Item Weight | 2.3 Pounds | | Manufacturer | AC Infinity | | Manufacturer Part Number | AC-DSA4 | | Model Number | AC-DSA4 | | UPC | 819137021051 | | Unit Count | 1 Count | ## Product Details - **Brand:** AC Infinity - **Global Trade Identification Number:** 00819137021051 - **Item Weight:** 2.3 Pounds - **Manufacturer:** AC Infinity - **UPC:** 819137021051 ## Images ![AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems - Image 1](https://m.media-amazon.com/images/I/51AYf5JWdAL.jpg) ![AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems - Image 2](https://m.media-amazon.com/images/I/61bCcwazKEL.jpg) ![AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems - Image 3](https://m.media-amazon.com/images/I/61RE0By2H6L.jpg) ![AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems - Image 4](https://m.media-amazon.com/images/I/61wAniwlO7L.jpg) ![AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems - Image 5](https://m.media-amazon.com/images/I/61HgnA0jqoL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: does this get installed before the fane for after the Fan and how far?** A: 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. **Q: Can you connect these mufflers in series? And what impact does that have? e.g. one reduces 50% two reduces 75% ... and so forth?** A: 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. **Q: Can I simple insert this silencer (not fan) before my output in my home music studio?** A: 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! **Q: Will this work on a radon fan system?** A: 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Highly effective *by S***E on November 1, 2023* 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. AC Infinity sells 8 inch silencer clamps which is a tube of thick rubber and a clamp at each end. This cuts down on sound and they make your setup look really clean. Another clamp was needed for my filter, just fyi. They are not the most secure things though, especially because the fan shrouds are plastic and flex a bit. Note: if you really want this in silver, you may need to request it. Mine came in black, but still looks great. ### ⭐⭐⭐⭐⭐ It's a muffler and a great one *by L***I on March 28, 2026* Great quality and it works for sure quiets the sound like after a muffler ### ⭐⭐⭐⭐⭐ Second one! *by S***B on February 24, 2026* This is my second purchase. If I need something from AC infinity, I usually order it from their website if I do not immediately need it so I can build points. However, I needed this ASAP. This silencer helps cut down on noise and it looks cool as hell. Cheers! ## Frequently Bought Together - AC Infinity Inline Duct Fan Silencer, 4" Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems - AC Infinity Noise Reduction Clamp 4-Inch, Duct Coupler with Stainless Steel Clamps, Flexible Rubber Coupling for Inline Fans and Carbon Filters in Growing and HVAC - AC Infinity CLOUDLINE PRO T4, Quiet 4” Inline Duct Fan with Temperature Humidity VPD Controller, WiFi Integrated App Control - Ventilation Exhaust Fan for Heating Cooling, Grow Tents, Hydroponics --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/177166705-ac-infinity-inline-duct-fan-silencer-4-noise-reduction-muffler](https://www.desertcart.co.uk/products/177166705-ac-infinity-inline-duct-fan-silencer-4-noise-reduction-muffler) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-03*