---
product_id: 299460619
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: "12.45 OMR"
currency: OMR
in_stock: true
reviews_count: 10
category: "Ecopro Vent"
url: https://www.desertcart.com.om/products/299460619-4-inch-backdraft-damper-for-straight-or-flex-duct-bathroom
store_origin: OM
region: Oman
---

# Quick DIY press-on install 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:** 12.45 OMR
**Availability:** ✅ In 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?** 12.45 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/299460619-4-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

- • **Universal Compatibility:** Seamlessly fits both flexible and straight duct pipes for versatile bathroom, kitchen, and dryer exhaust solutions.
- • **Heat-Resistant Reliability:** Operates flawlessly from freezing -22°F up to scorching 400°F, perfect for indoor and outdoor use.
- • **Effortless DIY Installation:** Press-on design with montage glue, tape, or clamps means no professional help needed—get it done fast and secure.
- • **Backflow Prevention for Cleaner Air:** Stops unwanted air backdrafts, enhancing ventilation efficiency and maintaining fresh indoor environments.
- • **Precision Engineered Ø4" Steel & Aluminum:** Durable materials ensure long-lasting, rust-resistant performance for your HVAC system.

## Overview

This 4-inch backdraft damper features a robust steel body with aluminum valve flaps, designed for easy installation on both flexible and straight duct systems. Heat-resistant from -22°F to 400°F, it prevents air backflow in bathroom, kitchen, and dryer exhausts, ensuring efficient ventilation and long-lasting durability for indoor and outdoor HVAC applications.

## 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 good - works great.stopes backflow of air
Review: Works as expected - Absolutely fantastic. You hear that vent dropping sound when turning off the range hood. Not sure why was it so hard to find at local home depot tho

## 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 |
| Batteries required | No |
| Best Sellers Rank | #82,374 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #183 in HVAC Ducting |
| Brand | ECOPRO VENT |
| Control Method | Touch |
| Customer Reviews | 4.3 4.3 out of 5 stars (158) |
| Electric fan design | Exhaust Fan |
| Finish Type | Painted |
| Finish types | Painted |
| Indoor/Outdoor Usage | Indoor |
| Installation Type | Duct Mount |
| Is Cordless? | No |
| Item Weight | 5.6 ounces |
| Item model number | 9cbd9b70-f7c7-4bf2-bb79-7c8bcd5728bd |
| Model Name | 9cbd9b70-f7c7-4bf2-bb79-7c8bcd5728bd |
| Number of Power Levels | 1 |
| Package Dimensions | 4.29 x 4.06 x 3.7 inches |
| Power Source | Corded Electric |
| Recommended Uses For Product | Cooling, Exhausting |
| Room Type | Kitchen |
| Size | 4" |
| Special Feature | Bladeless |
| Style | Modern |
| Wattage | 60 watts |

## Product Details

- **Brand:** ECOPRO VENT
- **Controller Type:** Button Control
- **Electric fan design:** Exhaust Fan
- **Material:** Metal
- **Mounting Type:** Duct Mount
- **Power Source:** Corded Electric
- **Recommended Uses For Product:** Cooling, Exhausting
- **Room Type:** Kitchen
- **Special Feature:** Bladeless
- **Style:** Modern

## 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/310JO1brwdL.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/31zfP1brw-L.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/41ImBU0ARSL.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/41a9NKGdhYL.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 5](https://m.media-amazon.com/images/I/41eJEeSFcDL.jpg)

## Available Options

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

## 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 good
*by D***N on November 24, 2025*

works great.stopes backflow of air

### ⭐⭐⭐⭐⭐ Works as expected
*by S***I on June 10, 2025*

Absolutely fantastic. You hear that vent dropping sound when turning off the range hood. Not sure why was it so hard to find at local home depot tho

### ⭐⭐⭐⭐⭐ Works great
*by M***O on February 9, 2025*

I purchased this backdraft gate for an exhaust fan in my basement. It’s opens with pressure from the fan and seals tight against the rubber gasket when the fan is turned off. It does exactly what I wanted and fit easily on my 8” duct pipe.

## 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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**Shop now:** [https://www.desertcart.com.om/products/299460619-4-inch-backdraft-damper-for-straight-or-flex-duct-bathroom](https://www.desertcart.com.om/products/299460619-4-inch-backdraft-damper-for-straight-or-flex-duct-bathroom)

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-10*