---
product_id: 579297840
title: "2Pack 4 inch Backdraft Damper Duct, One Way Airflow Ducting Insert for Ducting in Range Hoods, Bathrooms Fans and Kitchen Fan"
brand: "mivide"
price: "885 kr"
currency: NOK
in_stock: true
reviews_count: 5
category: "Mivide"
url: https://www.desertcart.no/products/579297840-2pack-4-inch-backdraft-damper-duct-one-way-airflow-ducting
store_origin: NO
region: Norway
---

# Smooth spring for effortless airflow 4-inch diameter precision fit Galvanized & stainless steel durability 2Pack 4 inch Backdraft Damper Duct, One Way Airflow Ducting Insert for Ducting in Range Hoods, Bathrooms Fans and Kitchen Fan

**Brand:** mivide
**Price:** 885 kr
**Availability:** ✅ In Stock

## Summary

> 💨 Stop Backdrafts, Start Fresh Air Flow!

## Quick Answers

- **What is this?** 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?** 885 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/579297840-2pack-4-inch-backdraft-damper-duct-one-way-airflow-ducting)

## 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

- • **Perfect Fit, Zero Hassle:** Designed for seamless insertion into standard 4-inch ducts, ensuring quick and secure installation without modifications.
- • **Effortless Airflow Control:** Smooth-running spring mechanism automatically opens and closes at low air volumes, preventing backdrafts and toxic fume buildup.
- • **Double Pack, Double Protection:** Two dampers included to efficiently manage airflow in multi-fan setups, enhancing ventilation performance and energy efficiency.
- • **Versatile Ventilation Solution:** Ideal for range hoods, bathroom fans, dryer ducts, and heating vents—perfect for both residential and industrial use.
- • **Built to Last, Built to Perform:** Crafted from premium galvanized steel with stainless steel springs and axis for unmatched corrosion resistance and longevity.

## Overview

This 2-pack of 4-inch backdraft dampers features durable galvanized steel construction with stainless steel springs, designed for easy insertion into standard ducts. The smooth-running spring flap automatically regulates airflow, preventing backdrafts and toxic fumes in kitchens, bathrooms, and industrial vents. Engineered for reliable, long-lasting ventilation control, these dampers are a must-have upgrade for efficient and safe air management.

## 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 | 444,710 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,442 in Ducting |
| Blade Length | 4 Inches |
| Blade Material | Plastic |
| Brand | MIVIDE |
| Brand Name | MIVIDE |
| Collection Name | Industrial |
| Colour | Silver |
| Control Method | Touch |
| Controller Type | Button Control |
| Customer Reviews | 4.6 out of 5 stars 193 Reviews |
| Electric Fan Design | Exhaust Fan |
| Electric fan design | Exhaust Fan |
| Finish Type | Metallic |
| Included Components | 2 Backdraft dampers |
| Indoor Outdoor Usage | Indoor |
| Installation Type | insertion |
| Is Electric | Yes |
| Is Product Cordless | No |
| Item Dimensions D x W x H | 0.1D x 8.8W x 10H centimetres |
| Item Weight | 0.26 Kilograms |
| Manufacturer | Pei Hong |
| Material | Stainless Steel Alloy Steel |
| Model Name | MIVIDE |
| Model Number | 613966160321 |
| Mounting Type | Wall Mount |
| Number of Blades | 2 |
| Part Number | 613966160321 |
| Power Source | Corded Electric |
| Power source | Corded Electric |
| Product dimensions | 0.1D x 8.8W x 10H centimetres |
| Recommended Uses For Product | Exhausting, Ventilating |
| Room Type | Office |
| Size | 4 Inch |
| Special Features | Smooth-running spring |
| Style | Industrial |
| Switch Type | Push Button |
| UPC | 613966160321 |
| Unit Count | 2.0 count |

## Product Details

- **Brand:** MIVIDE
- **Color:** 4 inch
- **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
- **Special Feature:** Backdraft damper, wide range of usages
- **Style:** Industrial

## Images

![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)
![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)
![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)
![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)
![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 24 November 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 17 March 2026*

Used for two fans into one exhaust, works perfectly

### ⭐⭐⭐⭐⭐ Nice product
*by A***D on 10 May 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
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*Product available on Desertcart Norway*
*Store origin: NO*
*Last updated: 2026-09-16*