---
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: "233 kr"
currency: DKK
in_stock: true
reviews_count: 13
category: "Vent Systems"
url: https://www.desertcart.dk/products/654059624-vent-systems-150-mm-6-inch-backdraft-damper-stopper-male
store_origin: DK
region: Denmark
---

# Fits 150mm ductwork precisely 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:** 233 kr
**Availability:** ✅ In Stock

## Summary

> 🚫❄️ Stop drafts, start comfort — your duct’s new best friend!

## 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?** 233 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/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 Compatibility:** Ideal for dryer vents, extractor fans, cooker hoods, and ventilation systems alike.
- • **Quick & Secure Installation:** Slide-in design with flange fits snugly, secured easily with tape or clamps—no fuss.
- • **Precision Fit for 150mm Ducts:** Seamlessly integrates with standard round ducting for hassle-free installation.
- • **Robust & Eco-Conscious Material:** Crafted from temperature-resistant, non-toxic plastic ensuring longevity and safety.
- • **Automatic One-Way Airflow Control:** Prevents cold drafts and unwanted odors with a smart backdraft damper shutter.

## Overview

The Vent Systems 150mm Backdraft Damper Stopper is a precision-engineered, one-way airflow duct insert designed to fit standard 150mm round ducts. Made from durable, temperature-resistant plastic, it automatically blocks backflow of cold air and odors, enhancing indoor comfort and energy efficiency. Compatible with a wide range of ventilation setups including dryer vents and extractor fans, it offers quick installation and eco-friendly reliability for both residential and commercial use.

## Description

Shop 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. Free delivery on eligible orders of £20 or more.

Review: Draught excluder - Fitted both of these and the rooms are noticeably warmer. Totally removed the draught coming in from the extractor fans. Will pay for themselves rather quickly I would think.
Review: Good quality - Works perfectly and seals well.

## 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 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 15,075 in DIY & Tools ( See Top 100 in DIY & Tools ) 164 in Registers, Grilles & Vents |
| Colour | White |
| Customer Reviews | 4.5 4.5 out of 5 stars (185) |
| Date First Available | 2 Nov. 2022 |
| Finish | Plastic |
| Included Components | Pipe Connector |
| Item Package Quantity | 1 |
| Item Weight | 109 g |
| Item model number | 6'' Inch Backdraft Damper |
| Manufacturer | Vent Systems |
| Material | Plastic |
| Number of Pieces | 1 |
| Plug profile | Inline |
| Power Source | Corded Electric |
| Product Dimensions | 15.19 x 15.19 x 6.2 cm; 108.86 g |
| Shape | Circular |
| Size | 150 mm / 5.90" w/Backdraft Damper |
| Special Features | One-Way Airflow |
| Style | Industrial |

## 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:** 109 g
- **Manufacturer:** Vent Systems
- **Material:** Plastic
- **Number of pieces:** 1
- **Size:** 150 mm / 5.90" w/Backdraft Damper

## 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/21aL5T2RTRL.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/21ssbIdVaTL.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/3164POXEFjL.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/4155VWBl5bL.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/41LhkEO+dqL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Draught excluder
*by M***K on 7 January 2026*

Fitted both of these and the rooms are noticeably warmer. Totally removed the draught coming in from the extractor fans. Will pay for themselves rather quickly I would think.

### ⭐⭐⭐⭐⭐ Good quality
*by M***N on 13 January 2026*

Works perfectly and seals well.

### ⭐⭐⭐⭐⭐ Good quality, easy to fit.
*by P***L on 1 January 2026*

Good quality, easy to fit and so far, does a good job. Only time will tell if it lasts?

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**Shop now:** [https://www.desertcart.dk/products/654059624-vent-systems-150-mm-6-inch-backdraft-damper-stopper-male](https://www.desertcart.dk/products/654059624-vent-systems-150-mm-6-inch-backdraft-damper-stopper-male)

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-30*