---
product_id: 490288611
title: "- 4\" Inch Backdraft Damper for Straight or Flex Duct. Bathroom Exhaust Fan. Kitchen Hood Exhaust Fan and Different Dryer Fan Backflow Preventer. Steel Damper with Aluminum Valve Flaps (4\")"
brand: "ecopro vent"
price: "€ 78.22"
currency: EUR
in_stock: false
reviews_count: 5
category: "Ecopro Vent"
url: https://www.desertcart.es/products/490288611-4-inch-backdraft-damper-for-straight-or-flex-duct-bathroom
store_origin: ES
region: Spain
---

# Quick DIY press-on assembly Heat-resistant -22°F to 400°F Ø4 inch steel/aluminum build - 4" Inch Backdraft Damper for Straight or Flex Duct. Bathroom Exhaust Fan. Kitchen Hood Exhaust Fan and Different Dryer Fan Backflow Preventer. Steel Damper with Aluminum Valve Flaps (4")

**Brand:** ecopro vent
**Price:** € 78.22
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Upgrade your airflow game with the ultimate backdraft damper!

## Quick Answers

- **What is this?** - 4" Inch Backdraft Damper for Straight or Flex Duct. Bathroom Exhaust Fan. Kitchen Hood Exhaust Fan and Different Dryer Fan Backflow Preventer. Steel Damper with Aluminum Valve Flaps (4") by ecopro vent
- **How much does it cost?** € 78.22 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/490288611-4-inch-backdraft-damper-for-straight-or-flex-duct-bathroom)

## Best For

- ecopro vent enthusiasts

## Why This Product

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

## Key Features

- • **Heat-Resistant Design:** Operates flawlessly from freezing -22°F up to scorching 400°F—perfect for indoor and outdoor use.
- • **Optimized Airflow Control:** Prevents backdrafts efficiently, enhancing your bathroom, kitchen, or dryer exhaust system’s performance.
- • **Effortless DIY Installation:** Press-on design with glue, tape, or clamps means no pro needed—upgrade your ventilation in minutes.
- • **Universal Fit for Flex & Straight Ducts:** Seamlessly integrates with both flexible and straight Ø4 inch ducting for versatile installation.
- • **Precision Engineered Ø4" Steel & Aluminum:** Durable materials ensure long-lasting, rust-resistant performance for your HVAC system.

## Overview

The ECOPRO VENT 4" Backdraft Damper features a robust steel frame with aluminum valve flaps, designed for Ø4 inch flexible or straight duct systems. Heat-resistant from -22°F to 400°F, it ensures reliable backflow prevention in HVAC, bathroom, kitchen, and dryer exhaust applications. Easy to install with a press-on design compatible with glue, tape, or clamps, this damper offers durable, high-velocity airflow control for both indoor and outdoor use.

## Description

Our products are made out of high quality plastic and coated steel. Guaranteed long life and durability. good compatibility with other ECOPRO VENT products.

Review: Works great!
Review: Flaps got caught and stayed closed

## Features

- Ø4 Inch steel backdraft damper with aluminum valve.
- For use with the Ø4 Inch Round flexible or straight Pipe Ducting systems
- Quick and easy to assemble - DIY Press on chosen duct - flex or straight - and by using montage glue. tape or steel clamps tighten the connection.
- Perfect for heating, cooling or air conditioning - HVAC. Bathroom and kitchen air exhaust.
- Heat-resistant from: -22 °F to 400°F. / Perfect for indoor and outdoor use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08XXT326K |
| Blade Material | Plastic |
| Brand | ECOPRO VENT |
| Brand Name | ECOPRO VENT |
| Collection Name | Bathroom,Kitchen |
| Colour | Silver |
| Control Method | Touch |
| Controller Type | Button Control |
| Country of Origin | USA |
| Customer Reviews | 4.1 out of 5 stars 43 Reviews |
| Electric Fan Design | Exhaust Fan |
| Electric fan design | Exhaust Fan |
| Finish Type | Painted |
| Included Components | Cord |
| Indoor Outdoor Usage | Indoor |
| Is Product Cordless | No |
| Item Weight | 0.16 Kilograms |
| Manufacturer | ECOPRO VENT |
| Material Type | Aluminium |
| Model Name | 9cbd9b70-f7c7-4bf2-bb79-7c8bcd5728bd |
| Model Number | 9cbd9b70-f7c7-4bf2-bb79-7c8bcd5728bd |
| Mounting Type | Window Mount |
| Number of Blades | 5 |
| Number of Power Levels | 1 |
| Power Source | Corded Electric |
| Power Source Type | Corded Electric |
| Recommended Uses For Product | Cooling, Exhausting |
| Room Type | Bathroom |
| Special Features | High Velocity |
| Style | Modern |
| Style Name | Modern |
| Switch Type | Push Button |
| Unit Count | 1.0 Count |
| Wattage | 60 Watts |

## Product Details

- **Brand:** ECOPRO VENT
- **Colour:** Silver
- **Electric fan design:** Exhaust Fan
- **Power Source:** Corded Electric
- **Style:** Modern
- **Room Type:** Bathroom
- **Special Feature:** High Velocity
- **Recommended Uses For Product:** Cooling, Exhausting
- **Wattage:** 60 Watts
- **Finish Type:** Painted

## Images

![- 4" Inch Backdraft Damper for Straight or Flex Duct. Bathroom Exhaust Fan. Kitchen Hood Exhaust Fan and Different Dryer Fan Backflow Preventer. Steel Damper with Aluminum Valve Flaps (4") - Image 1](https://m.media-amazon.com/images/I/71jb4lQgBQL.jpg)
![- 4" Inch Backdraft Damper for Straight or Flex Duct. Bathroom Exhaust Fan. Kitchen Hood Exhaust Fan and Different Dryer Fan Backflow Preventer. Steel Damper with Aluminum Valve Flaps (4") - Image 2](https://m.media-amazon.com/images/I/71HGhwLU+dL.jpg)
![- 4" Inch Backdraft Damper for Straight or Flex Duct. Bathroom Exhaust Fan. Kitchen Hood Exhaust Fan and Different Dryer Fan Backflow Preventer. Steel Damper with Aluminum Valve Flaps (4") - Image 3](https://m.media-amazon.com/images/I/71EoEjiXnxL.jpg)
![- 4" Inch Backdraft Damper for Straight or Flex Duct. Bathroom Exhaust Fan. Kitchen Hood Exhaust Fan and Different Dryer Fan Backflow Preventer. Steel Damper with Aluminum Valve Flaps (4") - Image 4](https://m.media-amazon.com/images/I/41ImBU0ARSL.jpg)

## Questions & Answers

**Q: Can this be mounted horizontally?**
A: Yes, I put it in a room AC vent, to outside, it wasnt at a 90 degree angle, appr a 45 anyway, nice product, spring loaded, working great for me

**Q: Can the 12" mount vertically?  My application need is for my kitchen exhaust fan which exits into attic.**
A: NOTE: by most state's codes; nothing should be openly venting into the attic.  I can run through the attic, but needs to be vented outside.  That said, the flapper is spring loaded and is opened by the force of the airflow created by your exhaust fan.  I suspect it can be mounted vertically, just make sure the flappers are oriented so they open in the direction of airflow (upward) when the exhaust fan comes on.  Hope this helps.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great!
*by R***T on 11 January 2025*



### ⭐ Flaps got caught and stayed closed
*by M***I on 4 September 2021*



### ⭐⭐⭐⭐⭐ Works good on dryer vent
*by T***N on 29 October 2024*



## Frequently Bought Together

- - 4" Inch Backdraft Damper for Straight or Flex Duct. Bathroom Exhaust Fan. Kitchen Hood Exhaust Fan and Different Dryer Fan Backflow Preventer. Steel Damper with Aluminum Valve Flaps (4")
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- Aluminum Foil Tape, 2 inch x 65 Feet (3.9 mil), Insulation Adhesive Metal High Temperature Heavy Duty HVAC Tape, Silver for Ductwork, Dryer Vent, HVAC

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-03-12*