---
product_id: 175532851
title: "Repa Market 4 Inch Backdraft Damper – Galvanized Steel Draft Blocker/One-Way Airflow Vent Stopper/HVAC Exhaust Dryer Duct Connector – Inline Spring-Loaded Backflow Preventer for Secure Ventilation"
brand: "repa market"
price: "E£ 2903"
currency: EGP
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.eg/products/175532851-repa-market-4-inch-backdraft-damper-galvanized-steel-draft-blocker
store_origin: EG
region: Egypt
---

# Fits Ø4 inch ducts precisely Spring-loaded dual flaps for one-way airflow Galvanized steel for durability Repa Market 4 Inch Backdraft Damper – Galvanized Steel Draft Blocker/One-Way Airflow Vent Stopper/HVAC Exhaust Dryer Duct Connector – Inline Spring-Loaded Backflow Preventer for Secure Ventilation

**Brand:** repa market
**Price:** E£ 2903
**Availability:** ✅ In Stock

## Summary

> 🛠️ Stop drafts, start comfort — the smart airflow guardian your HVAC deserves!

## Quick Answers

- **What is this?** Repa Market 4 Inch Backdraft Damper – Galvanized Steel Draft Blocker/One-Way Airflow Vent Stopper/HVAC Exhaust Dryer Duct Connector – Inline Spring-Loaded Backflow Preventer for Secure Ventilation by repa market
- **How much does it cost?** E£ 2903 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.eg](https://www.desertcart.com.eg/products/175532851-repa-market-4-inch-backdraft-damper-galvanized-steel-draft-blocker)

## Best For

- repa market enthusiasts

## Why This Product

- Trusted repa market brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Universal HVAC Compatibility:** Perfect for dryers, exhaust fans, range hoods, and more—works with rigid or flexible metal ducting for professional-grade ventilation.
- • **Automatic Backdraft Prevention:** Dual spring-loaded flaps open only outward, blocking cold air, odors, and drafts to keep your space comfortable and efficient.
- • **Built to Last with Heavy-Duty Steel:** Constructed from galvanized steel to resist high temperatures, moisture, and wear—ideal for continuous HVAC use.
- • **Precision Fit for Seamless Integration:** Engineered to snugly fit 4-inch round ducts, ensuring airtight performance without leaks.
- • **Effortless Installation, Versatile Orientation:** Quickly insert into metal ducts horizontally or vertically with a secure foam seal for reliable airflow control.

## Overview

The Repa Market 4 Inch Backdraft Damper is a galvanized steel inline ventilation accessory designed to fit 4-inch round ducts. Featuring dual spring-loaded flaps, it prevents reverse airflow, drafts, and odors while maintaining efficient ventilation. Durable and easy to install, it suits a wide range of HVAC applications including dryers, exhaust fans, and range hoods, ensuring secure, quiet, and energy-efficient airflow control.

## Description

Full description not available

## Features

- DIMENSIONS – Fits into Ø4 Inch round ducts; Insertion neck diameter: 3.89 inch. Total width: 3.46 Inch. Precision-engineered for a tight internal fit inside metal ventilation pipes for reliable, airtight performance.
- AUTOMATIC BACKDRAFT CONTROL – 4 Inch inline draft stopper features dual spring-loaded flaps that open only in the outflow direction, stopping reverse airflow, cold air, odors, and unwanted drafts while keeping HVAC duct systems efficient and quiet.
- DURABLE GALVANIZED STEEL – Heavy-duty galvanized steel backflow damper with smooth spring action and foam seal prevents rattling and air leakage. Built to withstand high temperatures, moisture, and continuous use in dryer vents, kitchen exhausts, HVAC ductwork, and heating systems.
- EASY INSTALLATION – Simply insert the draft blocker into round ducting until the stop edge; fits Ø4 Inch metal ventilation pipes for a secure seal. Can be installed horizontally or vertically. Horizontal setups require the spring to be positioned sideways for optimal one-way airflow in your duct system.
- WIDE HVAC APPLICATIONS – Designed as a backdraft shutter for air conditioners, dryers, cooker hoods, bathroom exhausts, inline ventilation fans, range hoods, and heating ducts. Works with rigid or flexible metal ducting and spiral pipe connectors, ensuring efficient backflow prevention in residential and commercial ventilation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material Type | Galvanized Steel |
| Color | Silver |
| Item Dimensions L x W x Thickness | 4"L x 4"W x 0.5"Th |

## Product Details

- **Color:** Silver
- **Material:** Galvanized Steel
- **Brand:** Repa Market
- **Product Dimensions:** 4"L x 3.46"W x 4"Th
- **Number of Pieces:** 1

## Images

![Repa Market 4 Inch Backdraft Damper – Galvanized Steel Draft Blocker/One-Way Airflow Vent Stopper/HVAC Exhaust Dryer Duct Connector – Inline Spring-Loaded Backflow Preventer for Secure Ventilation - Image 1](https://m.media-amazon.com/images/I/71PnvUBtxOL.jpg)
![Repa Market 4 Inch Backdraft Damper – Galvanized Steel Draft Blocker/One-Way Airflow Vent Stopper/HVAC Exhaust Dryer Duct Connector – Inline Spring-Loaded Backflow Preventer for Secure Ventilation - Image 2](https://m.media-amazon.com/images/I/61sxIhT8Q7L.jpg)
![Repa Market 4 Inch Backdraft Damper – Galvanized Steel Draft Blocker/One-Way Airflow Vent Stopper/HVAC Exhaust Dryer Duct Connector – Inline Spring-Loaded Backflow Preventer for Secure Ventilation - Image 3](https://m.media-amazon.com/images/I/81hC96pXepL.jpg)
![Repa Market 4 Inch Backdraft Damper – Galvanized Steel Draft Blocker/One-Way Airflow Vent Stopper/HVAC Exhaust Dryer Duct Connector – Inline Spring-Loaded Backflow Preventer for Secure Ventilation - Image 4](https://m.media-amazon.com/images/I/81BWbSWvu7L.jpg)
![Repa Market 4 Inch Backdraft Damper – Galvanized Steel Draft Blocker/One-Way Airflow Vent Stopper/HVAC Exhaust Dryer Duct Connector – Inline Spring-Loaded Backflow Preventer for Secure Ventilation - Image 5](https://m.media-amazon.com/images/I/81-Smn5RpHL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good buy
*by A***R on June 20, 2025*

Worked great. As described.

### ⭐⭐⭐⭐⭐ Perfect for stove hood
*by A***R on February 12, 2024*

I bought a new house and the builders didn't install a damper so in the winter I could feel cold air coming in at my stove. This was easy to install just removed a spacer from the existing exhaust pipe and put this in. All the cold air stopped this is exactly what I was missing.

### ⭐⭐⭐⭐ Works but spring is weak
*by J***H on January 4, 2024*

This damper works, but the spring is very weak. If you tip it anywhere past horizontal the doors fall open, so it can only be installed with the doors facing up or horizontally. Additionally if the doors open all the way to the center, the springs are not strong enough to push them closed again. I haven't run into an issue with this yet, but just noticed during the installation and will need to check at some point to make sure they are not stuck open.

## Frequently Bought Together

- Draft Blocker 4'' Inch - Backdraft Damper - Draft Stopper - Backflow Preventer - Inline Fan Vent Deflector - One-Way Airflow Ducting - Dryer Duct Connector with Backdraught Flap
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*Product available on Desertcart Egypt*
*Store origin: EG*
*Last updated: 2026-01-22*