Fast Shipping On All Items 30 Days Money Guarantee Customer Support Excellent Service 100% Satisfaction Satisfaction Guaranteed 8" Noise Reduction Muffler Blower Silencer for Indoor Hydroponics Grow Tent Ventilation Systems Specification Item model number AC-DSA8 Brand AC Infinity Material Aluminum, Alloy Steel Country of Origin China Global Trade Identification Number 00819137021075 Manufacturer AC Infinity Package Dimensions 20.5 x 11.8 x 11.5 inches; 5.85 Pounds Size 8" 11.8 inches x 20.5 inches x 11.5 inches. Weight: 5.85 lb Item Description 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: 8 inches | Length: 27 inches | Weight: 6.00 pounds 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. Add to Cart Add to Cart Add to Cart Customer Reviews 4.5 out of 5 stars 609 4.5 out of 5 stars 609 4.5 out of 5 stars 609 Price $39.99$39.99 $59.99$59.99 $84.99$84.99 Model AC-DSA4 AC-DSA6 AC-DSA8 Duct Opening Size 4" 6" 8" Flange Length 1.5" 1.5" 1.5" Maximum Airflow Passthrough ? ? ? Easy to Install ? ? ? Can Withstand Extreme Temperatures ? ? ? Body Material Galvanized Steel Galvanized Steel Galvanized Steel Dampening Material Neoprene Foam Neoprene Foam Neoprene Foam Foam Design Egg Crate Wave Crest Egg Crate Wave Crest Egg Crate Wave Crest Applications Various ventilation projects including bathrooms and hydroponic grow rooms and tents. HVAC applications involving boosting airflow intake and exhaust including AV equipment rooms and closets. Various ventilation projects including bathrooms and hydroponic grow rooms and tents. HVAC applications involving boosting airflow intake and exhaust including AV equipment rooms and closets. Various ventilation projects including bathrooms and hydroponic grow rooms and tents. HVAC applications involving boosting airflow intake and exhaust including AV equipment rooms and closets. Return Policy ? We guarantee against any defective or misrepresented products. The original shipping label must be sent back to us to validate the return. A full refund can only be issued during the first 30 days upon receipt of the product. ? Returns will be voided if the product is mishandled or physical damaged by customer. ? Buyer will be responsible for all kind of return shipping/shipment to the seller for resolving the problem. ? Returns made for all non-defective, undamaged products are subject to a 15% restocking fee. Shipping and handling fees are absolutely non-refundable. If an item is returned to us due to an address issue, we do charge a reshipping fee to reship. If you would like a refund, there will be a 15% restocking fee applied. ? All returned products need to be assigned an RMA # (Return Merchandise Authorization #) prior to return. Please contact us through's messaging system to obtain an RMA# for the return. Any returned product without an RMA # on package will not be accepted or processed. ? Please contact us before returning. Feedback ? 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