--- product_id: 462246001 title: "6 Inch Backdraft Damper Back Draft Vent Duct Shutter Blocker, Backflow Ducting Insert One-Way Airflow Preventer with Inline Springs Loaded Folding Blades, HVAC Extractor Range Fan Hood Deflector" brand: "miuwauer" price: "€ 46.66" currency: EUR in_stock: true url: https://www.desertcart.be/products/462246001-6-inch-backdraft-damper-back-draft-vent-duct-shutter-blocker store_origin: BE region: Belgium --- # Spring-loaded one-way airflow Withstands temps up to 50°C Galvanized steel & aluminum build 6 Inch Backdraft Damper Back Draft Vent Duct Shutter Blocker, Backflow Ducting Insert One-Way Airflow Preventer with Inline Springs Loaded Folding Blades, HVAC Extractor Range Fan Hood Deflector **Brand:** miuwauer **Price:** € 46.66 **Availability:** ✅ In Stock ## Summary > 🌬️ Stop the backdraft, start the comfort — your airflow’s new best friend! ## Quick Answers - **What is this?** 6 Inch Backdraft Damper Back Draft Vent Duct Shutter Blocker, Backflow Ducting Insert One-Way Airflow Preventer with Inline Springs Loaded Folding Blades, HVAC Extractor Range Fan Hood Deflector by miuwauer - **How much does it cost?** € 46.66 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/462246001-6-inch-backdraft-damper-back-draft-vent-duct-shutter-blocker) ## Best For - miuwauer enthusiasts ## Why This Product - Trusted miuwauer brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Airflow Control:** Automatically opens and closes at low air volumes to prevent cold drafts and backflow, maintaining optimal indoor comfort. - • **Seamless Airtight Seal:** Smooth-running springs and rubber gaskets create a tight grip, eliminating unwanted air leaks and energy loss. - • **Effortless Installation:** Push-in design fits flexible and rigid ducts with easy horizontal or vertical mounting for maximum versatility. - • **Durable, Premium Materials:** Galvanized steel body with aluminum flaps and stainless steel springs ensure long-lasting performance and corrosion resistance. - • **Universal HVAC Compatibility:** Perfect for AC, dryer vents, exhaust fans, range hoods, and commercial or residential ventilation systems. ## Overview The Miuwauer 6 Inch Backdraft Damper is a robust HVAC accessory crafted from galvanized steel, aluminum, and stainless steel components. Designed to prevent unwanted airflow and backdrafts, it features spring-loaded folding blades that automatically regulate air movement. Easy to install in both flexible and rigid ducts, this damper enhances ventilation efficiency across residential and commercial systems while withstanding temperatures up to 50°C. ## Description 1 ## Features - 【Quality Material】The backdraft damper is made of galvanized steel, the flap leaves are made of aluminu, and the axis and spring are made of stainless steel, which can withstand temperatures up to 50°C - 【Practical Features】The air duct choke prevents cold air or wind from entering the ventilation duct. The backflow flap opens and closes automatically at low air volumes. The valve is equipped with a smooth-running spring and a rubber gasket that create an airtight seal and grip between the damper and ducts - 【Easy Installation 】The backflow prevention valve is installed by pushing it into the ventilation duct to make it as mobile as possible. When the valve flap is installed horizontally, the position of the spring should be horizontal so that the valve flap can be opened and closed optimally. This also applies to vertical installation. Same for vertical installation - 【Multiple Usages】The draft blocker is designed for use in AC, dryer vent, exhaust, extractor or range hoods, heating systems, fans, vents and other residential, commercial and industrial HVAC applications. The back draft damper can be inserted into a flexible or non-flexible ventilation duct - 【Needs Attention 】This airflow regulating backdraft shutter is installed on the TD lip to improve ventilation by preventing air circulation when the fan is not in use. Plastic pipes are of different sizes and cannot be used with plastic pipes ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Miuwauer | | Brand | Miuwauer | | Package Dimensions | 17.3 x 16 x 9.4 cm; 204 g | | Item Weight | 204 g | ## Images ![6 Inch Backdraft Damper Back Draft Vent Duct Shutter Blocker, Backflow Ducting Insert One-Way Airflow Preventer with Inline Springs Loaded Folding Blades, HVAC Extractor Range Fan Hood Deflector - Image 1](https://m.media-amazon.com/images/I/61bukIagPZL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - 6 Inch Backdraft Damper Back Draft Vent Duct Shutter Blocker, Backflow Ducting Insert One-Way Airflow Preventer with Inline Springs Loaded Folding Blades, HVAC Extractor Range Fan Hood Deflector - MIAHART 6 inch Hose Clamp Adjustable 304 Stainless Steel Duct Clamps Worm Gear Adjustable 141mm-165mm Hose Clamp (Pack of 6) - AC Infinity Flexible 6-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust --- ## 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.be/products/462246001-6-inch-backdraft-damper-back-draft-vent-duct-shutter-blocker](https://www.desertcart.be/products/462246001-6-inch-backdraft-damper-back-draft-vent-duct-shutter-blocker) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-05-25*