--- product_id: 654059624 title: "Vent Systems 150 mm / 6\" Inch Backdraft Damper Stopper - Male Fit Dryer Vent Backflow with Shutter - Plastic One-Way Airflow Ducting Insert - Inline Fan Vent Deflector" brand: "vent systems" price: "€ 29.41" currency: EUR in_stock: true reviews_count: 3 category: "Vent Systems" url: https://www.desertcart.be/products/654059624-vent-systems-150-mm-6-inch-backdraft-damper-stopper-male store_origin: BE region: Belgium --- # Fits 150mm ductwork perfectly Durable, eco-friendly plastic build One-way airflow backdraft prevention Vent Systems 150 mm / 6" Inch Backdraft Damper Stopper - Male Fit Dryer Vent Backflow with Shutter - Plastic One-Way Airflow Ducting Insert - Inline Fan Vent Deflector **Brand:** vent systems **Price:** € 29.41 **Availability:** ✅ In Stock ## Summary > 🚀 Stop backflow, start fresh airflow—vent smarter, live better! ## Quick Answers - **What is this?** Vent Systems 150 mm / 6" Inch Backdraft Damper Stopper - Male Fit Dryer Vent Backflow with Shutter - Plastic One-Way Airflow Ducting Insert - Inline Fan Vent Deflector by vent systems - **How much does it cost?** € 29.41 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/654059624-vent-systems-150-mm-6-inch-backdraft-damper-stopper-male) ## Best For - vent systems enthusiasts ## Why This Product - Trusted vent systems brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Vent Solution:** Ideal for dryers, extractor fans, kitchen hoods, and HVAC systems—upgrade your airflow game. - • **Automatic Backflow Control:** Smart shutter design blocks unwanted cold air and odors, maintaining fresh airflow. - • **Seamless 150mm Compatibility:** Effortlessly integrates with standard round ducts for a sleek, professional finish. - • **Universal Fit & Easy Install:** Slide-in male fit with quick securing options—no fuss, no downtime. - • **Robust & Eco-Conscious Material:** Crafted from temperature-resistant, non-toxic plastic for lasting performance and safety. ## Overview This 150mm (6") Backdraft Damper Stopper is a durable, plastic one-way airflow insert designed to fit standard round ductwork. It automatically prevents backflow of cold air and odors with a smart shutter mechanism, ensuring efficient ventilation for dryers, extractor fans, and HVAC systems. Easy to install with a male-fit coupling, it offers temperature resistance from -20°C to +60°C and is made from eco-friendly, non-toxic materials. ## Description Product Description Review: Excellent - Exactly what was needed Review: Nice flap - All good ## Features - COMPATIBLE WITH 150MM DUCTWORK: This male-fit coupler (inserts INTO the duct) has a diameter of 149mm / 5.87" for connection with round ducting pipes in a straight line. Connector overall length is 2.4" / 61 mm and it's thickness is 0.08" / 2 mm. The backflow damper opens and closes automatically. - Crafted from durable plastic with temperature resistance of -20°C to +60°C, this material offers high strength, excellent toughness, and ease of processing. It's environmentally friendly and non-toxic, making it a safe choice for both residential and commercial ducting applications, including tumble dryer vents, extractor fans, ventilation systems, and cooker hoods. - Designed to fit most extractor fans, bathroom fans, kitchen exhaust fans, in-line extract fans, cooker hoods, and various heating or cooling ducts. Just slide the flange into your round ducts and secure it with duct tape, clamps, or sealant for a quick and straightforward installation. - Duct draft stopper prevent cold air or wind from entering the ventilation pipe. In this case, the flap is installed in such a way that the flap leaves only open into the outgoing air direction. This means that no cold air / wind or smell can penetrate the ventilation pipe from the outside. - The backflow Preventer valve is installed by pushing it into the ventilation pipe as far as it will go. The position of the spring should be horizontal when the flap is installed horizontally so that it can be opened and closed optimally. This also applies to the vertical installation. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09PBMP424 | | Best Sellers Rank | 44,179 in DIY & Tools ( See Top 100 in DIY & Tools ) 538 in Registers, Grilles & Vents | | Brand | Vent Systems | | Colour | White | | Connector Type | Coupling | | Connector type | Coupling | | Country of Origin | Poland | | Customer Reviews | 4.1 out of 5 stars 40 Reviews | | Global Trade Identification Number | 04751037234222 | | Included Components | Pipe Connector | | Item Dimensions | 15.2 x 15.2 x 6.2 centimetres | | Item Weight | 0.24 Pounds | | Item dimensions L x W x H | 15.2 x 15.2 x 6.2 centimetres | | Manufacturer | Vent Systems | | Material | Plastic | | Model Number | 6'' Inch Backdraft Damper | | Number of Pieces | 1 | | Size | 150 mm / 5.90" w/Backdraft Damper | | Thread Type | NPT | | Unit Count | 1.0 count | ## Product Details - **Brand:** Vent Systems - **Colour:** White - **Connector type:** Coupling - **Global Trade Identification Number:** 04751037234222 - **Item dimensions L x W x H:** 15.2 x 15.2 x 6.2 centimetres - **Item weight:** 0.24 Pounds - **Material:** Plastic - **Number of pieces:** 1 - **Size:** 150 mm / 5.90" w/Backdraft Damper - **Thread type:** NPT ## Images ![Vent Systems 150 mm / 6" Inch Backdraft Damper Stopper - Male Fit Dryer Vent Backflow with Shutter - Plastic One-Way Airflow Ducting Insert - Inline Fan Vent Deflector - Image 1](https://m.media-amazon.com/images/I/61I1zOKgNfL.jpg) ![Vent Systems 150 mm / 6" Inch Backdraft Damper Stopper - Male Fit Dryer Vent Backflow with Shutter - Plastic One-Way Airflow Ducting Insert - Inline Fan Vent Deflector - Image 2](https://m.media-amazon.com/images/I/71-jWDRW3iL.jpg) ![Vent Systems 150 mm / 6" Inch Backdraft Damper Stopper - Male Fit Dryer Vent Backflow with Shutter - Plastic One-Way Airflow Ducting Insert - Inline Fan Vent Deflector - Image 3](https://m.media-amazon.com/images/I/71JZfoYldvL.jpg) ![Vent Systems 150 mm / 6" Inch Backdraft Damper Stopper - Male Fit Dryer Vent Backflow with Shutter - Plastic One-Way Airflow Ducting Insert - Inline Fan Vent Deflector - Image 4](https://m.media-amazon.com/images/I/614wr2Jw2sL.jpg) ![Vent Systems 150 mm / 6" Inch Backdraft Damper Stopper - Male Fit Dryer Vent Backflow with Shutter - Plastic One-Way Airflow Ducting Insert - Inline Fan Vent Deflector - Image 5](https://m.media-amazon.com/images/I/71ZGYHccFbL.jpg) ## Available Options This product comes in different **Size, Item Package Quantity** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent *by K***B on 19 April 2026* Exactly what was needed ### ⭐⭐⭐⭐⭐ Nice flap *by S***S on 10 January 2026* All good ### ⭐⭐⭐ Just didn't work out for me *by D***D on 28 June 2023* Returned it --- ## 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/654059624-vent-systems-150-mm-6-inch-backdraft-damper-stopper-male](https://www.desertcart.be/products/654059624-vent-systems-150-mm-6-inch-backdraft-damper-stopper-male) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-07-28*