---
product_id: 361113405
title: "Repa Market Draft Blocker 4'' Inch - Backdraft Damper - Draft Stopper - Backflow Preventer - Inline Fan Vent Deflector - One-Way Airflow Ducting - Dryer Duct Connector with Backdraught Flap"
brand: "repa market"
price: "C$3217"
currency: NIO
in_stock: true
reviews_count: 5
category: "Repa Market"
url: https://www.desertcart.ni/products/361113405-repa-market-draft-blocker-4-inch-backdraft-damper-draft-stopper
store_origin: NI
region: Nicaragua
---

# 4'' inline duct fit foam strip for silent operation automatic spring-loaded flap Repa Market Draft Blocker 4'' Inch - Backdraft Damper - Draft Stopper - Backflow Preventer - Inline Fan Vent Deflector - One-Way Airflow Ducting - Dryer Duct Connector with Backdraught Flap

**Brand:** repa market
**Price:** C$3217
**Availability:** ✅ In Stock

## Summary

> 🛠️ Stop the Backdraft, Start the Comfort!

## Quick Answers

- **What is this?** Repa Market Draft Blocker 4'' Inch - Backdraft Damper - Draft Stopper - Backflow Preventer - Inline Fan Vent Deflector - One-Way Airflow Ducting - Dryer Duct Connector with Backdraught Flap by repa market
- **How much does it cost?** C$3217 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/361113405-repa-market-draft-blocker-4-inch-backdraft-damper-draft-stopper)

## 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

- • **Retrofit Ready:** Compact design fits inside ducts for easy upgrades without duct modifications.
- • **Versatile Installation:** Works horizontally or vertically, ideal for ACs, dryers, exhausts, and HVAC systems.
- • **Seamless 4'' Inline Fit:** Perfectly designed for standard ventilation ducts, ensuring hassle-free integration.
- • **Smart Auto-Opening Flap:** Spring-loaded mechanism opens and closes automatically for optimal airflow control.
- • **Whisper-Quiet Performance:** Internal foam strip eliminates rattling, keeping your space peaceful.

## Overview

The Repa Market Draft Blocker is a 4-inch galvanized backdraft damper designed for commercial and residential ventilation ducts. Featuring a spring-loaded flap with a noise-reducing foam strip, it automatically regulates airflow to prevent cold air backflow. Easy to install horizontally or vertically, it fits seamlessly inside ducts for HVAC, dryer vents, and exhaust systems, enhancing indoor air quality and comfort.

## Description

Size Name:" inch / mm With the current rapidly growing focus on quality of life and comfort requirements in residential and working premises, the importance of ventilation is more significant than ever. Even in the well designed and maintained building, a person can be uncomfortable if the system for air exchange is not working or is functioning incorrectly. In premises where the air is always fresh, people feel more active, relaxed, healthy, and have good appearance and capacity for work. Installation of a ventilation system is liable engineering and technical task. Our health depends upon the operation of ventilation system and its components. That is why the choice of ventilation equipment is primary for quality, reliability and environment friendly conditions. “Repa Market” is a young developing company which offers quality, reliable and functional products, interesting designer solutions, wide opportunities of choice and beneficial terms of cooperation. The strategic aim of Repa Market is to meet continuously growing consumer demand in quality products. The results of detailed marketing research underlie design and construction of various new developments. High quality materials, modern production equipment, the experience and knowledge of qualified specialists provide highly efficient, aesthetic, reliable and environmentally friendly products.

Review: Unseviceable.
Review: Hooked up inline with our hood fan above our stove, prevented back draft of cold air in the winter season. Easy install

## Features

- Back draft damper is made for insertion into inch ventilation ducts. The backflow damper RKI opens and closes automatically. It has a strong spring and can be installed either horizontally or vertically. The flap is suitable for retrofitting, since it is completely inside the duct
- Damper has 2 valves, designed for use in air conditioners (AC), dryers, exhaust, extractor or range hoods, heating ducts, vents and other HVAC applications
- 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.
- The backflow flap opens and closes automatically at low air volumes. It has a smooth-running spring and an internal foam strip to keep the blades from rattling and can be installed horizontally or vertically
- Back draught valves can be inserted into ventilation ducts which are flexible or non flexible. Cannot be used with plastic ducts as the sizes are different.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0822VQMHM |
| Batteries required | No |
| Best Sellers Rank | #130,975 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #187 in Heating & Cooling Ducting Products |
| Customer Reviews | 4.5 4.5 out of 5 stars (479) |
| Date First Available | 4 March 2020 |
| Finish types | Galvanized |
| Included components | Backdraft Damper |
| Number of pieces | 1 |
| Product Dimensions | 10.5 x 10.5 x 9.7 cm; 130 g |
| Specific uses | Commercial/Residential |

## Product Details

- **Brand:** Repa Market
- **Colour:** Silver
- **Material:** Metal
- **Maximum gap fill:** 4 Inches
- **Product dimensions:** 10.2L x 10.2W x 1.3Th centimeters

## Images

![Repa Market Draft Blocker 4'' Inch - Backdraft Damper - Draft Stopper - Backflow Preventer - Inline Fan Vent Deflector - One-Way Airflow Ducting - Dryer Duct Connector with Backdraught Flap - Image 1](https://m.media-amazon.com/images/I/71PnvUBtxOL.jpg)

## Customer Reviews

### ⭐ Review
*by A***H on 24 June 2024*

Unseviceable.

### ⭐⭐⭐⭐⭐ Review
*by J***. on 23 December 2025*

Hooked up inline with our hood fan above our stove, prevented back draft of cold air in the winter season. Easy install

### ⭐⭐⭐⭐⭐ Review
*by F***N on 3 June 2023*

alles ok

## 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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**Shop now:** [https://www.desertcart.ni/products/361113405-repa-market-draft-blocker-4-inch-backdraft-damper-draft-stopper](https://www.desertcart.ni/products/361113405-repa-market-draft-blocker-4-inch-backdraft-damper-draft-stopper)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-02-21*