--- product_id: 356224465 title: "MIVIDE 2Pack 4 inch Backdraft Damper Duct, One Way Airflow Ducting Insert for Ducting in Range Hoods, Bathrooms Fans and kitchen Fan" brand: "mivide" price: "337 kr" currency: DKK in_stock: true reviews_count: 8 category: "Mivide" url: https://www.desertcart.dk/products/356224465-mivide-2pack-4-inch-backdraft-damper-duct-one-way-airflow store_origin: DK region: Denmark --- # One-way airflow for backdraft prevention 4 inch diameter precision fit Galvanized steel & stainless spring durability MIVIDE 2Pack 4 inch Backdraft Damper Duct, One Way Airflow Ducting Insert for Ducting in Range Hoods, Bathrooms Fans and kitchen Fan **Brand:** mivide **Price:** 337 kr **Availability:** ✅ In Stock ## Summary > 💨 Keep your air fresh and your space flawless with MIVIDE’s sleek airflow guardian! ## Quick Answers - **What is this?** MIVIDE 2Pack 4 inch Backdraft Damper Duct, One Way Airflow Ducting Insert for Ducting in Range Hoods, Bathrooms Fans and kitchen Fan by mivide - **How much does it cost?** 337 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/356224465-mivide-2pack-4-inch-backdraft-damper-duct-one-way-airflow) ## Best For - mivide enthusiasts ## Why This Product - Trusted mivide brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Silent Efficiency:** Smooth-running spring mechanism operates quietly even at low air volumes—no noisy interruptions in your space. - • **Smart Airflow Control:** Automatic flap opens only with outgoing air, preventing backdrafts and unwanted odors from creeping back in. - • **Versatile Vent Solution:** Ideal for range hoods, bathroom fans, dryer ducts, and more—upgrade your ventilation system with confidence. - • **Perfect Fit, Zero Hassle:** Designed to seamlessly integrate with standard 4-inch ducting for effortless installation and optimal airflow. - • **Built to Last, Built to Perform:** Crafted from galvanized steel with stainless steel springs ensuring long-lasting durability and reliable tension. ## Overview The MIVIDE 2Pack 4 inch Backdraft Damper Duct offers a precision-engineered, durable solution to prevent backdrafts in residential and industrial ventilation systems. Made from galvanized steel with stainless steel springs, it ensures reliable one-way airflow, easy installation, and quiet operation—perfect for kitchens, bathrooms, and exhaust fans. ## Description Product description Review: Work as expected. Price half that of big box stores. - I vent 2 bathrooms into a single vent out the roof. I needed to install these on each side to prevent backdraft. I disconnect the pipe at the roof vent and installed these then turned on the fan before reconnecting. The flappers opened and worked as expected. Added benefit was the gasket on the flapper. I'm sure the seal is not perfect however it is good enough for what i need. They fit into the existing 4" duct work without issues. Availability was key, local stores did not have anything like these in stock. Review: Very nice addition - Used for two fans into one exhaust, works perfectly ## Features - PRODUCT SIZE: Diameter 100MM/4 inch, length 88MM/3.5 inch, thickness 0.5MM/0.02 inch. Please confirm the size before purchase - HIGH QUALITY MATERIALS: Galvanized steel damper is made of quality galvanized steel, and the axis and spring are made of stainless steel, product Very solid and well made, good tension on the spring - EASY TO INSTALLATION: The backflow flap is installed by inserting it into the ventilation pipe until it stops. The position of the spring should be horizontal for horizontal installations so that it can open and close optimally. The backdraft shutter is installed so that the damper blades open only in the outflowing air direction - PRACTICAL DESIGN: Backdraft damper has a smooth-running spring. The backflow flap opens and closes automatically at low air volumes. Backdraft damper can ventilate an area to avoid toxic fumes from building up - WIDE RANGE OF USAGES: These draft blocker set can be widely applied in exhaust fan pipe, a dryer duct, range hoods, heating ducts, vents and other residential and industrial applications ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B093KJ34Q8 | | Best Sellers Rank | #93,067 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #139 in HVAC Ducting | | Blade Length | 4 Inches | | Blade Material | Plastic | | Brand | MIVIDE | | Brand Name | MIVIDE | | Color | 4 inch | | Control Method | Touch | | Controller Type | Button Control | | Customer Reviews | 4.5 out of 5 stars 189 Reviews | | Electric Fan Design | Exhaust Fan | | Electric fan design | Exhaust Fan | | Finish Type | Metallic | | Indoor Outdoor Usage | Indoor | | Installation Type | insertion | | Is Electric | Yes | | Is Product Cordless | No | | Item Dimensions D x W x H | 0.02"D x 3.46"W x 3.94"H | | Item Weight | 0.26 Kilograms | | Manufacturer | Pei hong | | Material | Stainless Steel | | Model Name | MIVIDE | | Model Number | 613966160321 | | Mounting Type | Wall Mount | | Number of Blades | 2 | | Part Number | 613966160321 | | Power Source | Corded Electric | | Product Dimensions | 0.02"D x 3.46"W x 3.94"H | | Recommended Uses For Product | Exhausting | | Room Type | Kitchen, Office | | Style | Industrial | | UPC | 613966160321 | | Unit Count | 2.0 Count | ## Product Details - **Brand:** MIVIDE - **Color:** 4 inch - **Controller Type:** Button Control - **Electric fan design:** Exhaust Fan - **Mounting Type:** Wall Mount - **Power Source:** Corded Electric - **Product Dimensions:** 0.02"D x 3.46"W x 3.94"H - **Recommended Uses For Product:** Exhausting - **Room Type:** Kitchen, Office - **Style:** Industrial ## Images ![MIVIDE 2Pack 4 inch Backdraft Damper Duct, One Way Airflow Ducting Insert for Ducting in Range Hoods, Bathrooms Fans and kitchen Fan - Image 1](https://m.media-amazon.com/images/I/71cfrMR07XL.jpg) ![MIVIDE 2Pack 4 inch Backdraft Damper Duct, One Way Airflow Ducting Insert for Ducting in Range Hoods, Bathrooms Fans and kitchen Fan - Image 2](https://m.media-amazon.com/images/I/71aO8cTQsnL.jpg) ![MIVIDE 2Pack 4 inch Backdraft Damper Duct, One Way Airflow Ducting Insert for Ducting in Range Hoods, Bathrooms Fans and kitchen Fan - Image 3](https://m.media-amazon.com/images/I/61Y1MglPjgL.jpg) ![MIVIDE 2Pack 4 inch Backdraft Damper Duct, One Way Airflow Ducting Insert for Ducting in Range Hoods, Bathrooms Fans and kitchen Fan - Image 4](https://m.media-amazon.com/images/I/61i+lJnKErL.jpg) ![MIVIDE 2Pack 4 inch Backdraft Damper Duct, One Way Airflow Ducting Insert for Ducting in Range Hoods, Bathrooms Fans and kitchen Fan - Image 5](https://m.media-amazon.com/images/I/71QT-m7VH1L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Work as expected. Price half that of big box stores. *by D***R on November 24, 2025* I vent 2 bathrooms into a single vent out the roof. I needed to install these on each side to prevent backdraft. I disconnect the pipe at the roof vent and installed these then turned on the fan before reconnecting. The flappers opened and worked as expected. Added benefit was the gasket on the flapper. I'm sure the seal is not perfect however it is good enough for what i need. They fit into the existing 4" duct work without issues. Availability was key, local stores did not have anything like these in stock. ### ⭐⭐⭐⭐⭐ Very nice addition *by C***E on March 17, 2026* Used for two fans into one exhaust, works perfectly ### ⭐⭐⭐⭐⭐ Nice product *by A***D on May 10, 2024* Easy to install perfect for a 2dryer home. Keeps them from steaming up when one or the other isnt running ## Frequently Bought Together - MIVIDE 2Pack 4 inch Backdraft Damper Duct, One Way Airflow Ducting Insert for Ducting in Range Hoods, Bathrooms Fans and kitchen Fan - QWORK 4" Duct Splitter, 45° Degree 4 Inch Branch Metal Duct Connector 3 Way Hose Adapter/Splitter - EesTeck 4" (Diameter) Adjustable 304 Stainless Steel Duct Clamps Hose Clamp Pipe Clamp Air Ducting Clamp worm drive hose clamps (4Pcs, 91mm-114mm) --- ## 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.dk/products/356224465-mivide-2pack-4-inch-backdraft-damper-duct-one-way-airflow](https://www.desertcart.dk/products/356224465-mivide-2pack-4-inch-backdraft-damper-duct-one-way-airflow) --- *Product available on Desertcart Denmark* *Store origin: DK* *Last updated: 2026-05-12*