---
product_id: 530273453
title: "2 Pcs 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector"
brand: "kikerike"
price: "$U2042"
currency: UYU
in_stock: true
reviews_count: 13
category: "Kikerike"
url: https://www.desertcart.uy/products/530273453-2-pcs-4-inch-draft-blocker-backdraft-damper-duct-draft
store_origin: UY
region: Uruguay
---

# 4-inch diameter precision fit One-way airflow backdraft prevention Galvanized steel & aluminum build 2 Pcs 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector

**Brand:** kikerike
**Price:** $U2042
**Availability:** ✅ In Stock

## Summary

> 🚫💨 Stop drafts, save energy, and breathe smarter with every airflow!

## Quick Answers

- **What is this?** 2 Pcs 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector by kikerike
- **How much does it cost?** $U2042 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/530273453-2-pcs-4-inch-draft-blocker-backdraft-damper-duct-draft)

## Best For

- kikerike enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Installation:** Push-in design with spring-aligned flaps allows quick setup in both horizontal and vertical ducts—no special tools needed.
- • **Durable Dual-Metal Design:** Crafted from galvanized steel and aluminum flaps for long-lasting corrosion resistance and reliable performance.
- • **Perfect Fit, Zero Guesswork:** Precisely sized 4-inch dampers ensure seamless integration with standard ventilation ducts for hassle-free installation.
- • **Versatile HVAC Compatibility:** Ideal for ACs, exhaust fans, range hoods, and heating ducts across residential, commercial, and industrial spaces.
- • **Smart One-Way Airflow Control:** Innovative backdraft damper prevents unwanted air recirculation, optimizing your HVAC efficiency and indoor comfort.

## Overview

This 2-pack of 4-inch backdraft dampers features galvanized steel bodies and aluminum flaps designed to prevent reverse airflow in ventilation systems. Easy to install with a push-in design, these dampers enhance HVAC efficiency by blocking unwanted drafts in residential and commercial ducts, ensuring optimal indoor climate control and energy savings.

## Description

Buy 2 Pcs 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector: Draft Stoppers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: I can’t believe it worked so well - Each time the A/C or furnace kicked on it would draw outside air in through the vent hood. Cold in the winter and hot in the summer. The temperature under the hood was significant and very noticeable. So I installed this draft blocker in the pipe in the attic, separating the pipe at a joint inserting the valve and reconnecting the pipes. I seal the joints with aluminum tape. The draft blocker has a weather strip inside sealing it when not in use. I did have to reseal the pipe where it passed through the roof with roof tar to restore the water seal. It works great, the is no back draft now when the A/C is running and made a huge difference. I would recommend and buy again.
Review: Happy with this product it does what they say it does. - These work great for what I need them for. They open and close a few times a day and have been working that way for about seven months now. Simple to install not much else to say.

## Features

- 【Product Contain】Package includes two backdraft damper with diameter of 4 inch/ 100mm. Please confirm the size before purchase. All dimensions are measured manually, please allow 1-3mm differences
- 【Quality Material】The 4 inch backdraft damper is made of a Galvanized steel, the flap leaves are made of aluminum
- 【Installation】The backdraft damper 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
- 【Function】This airflow regulating backdraft shutter fits over the TD lip and is designed to improve ventilation by preventing air from re-circulating when the fans are not in use. 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
- 【Wide Application】 These backdraft dampers can be widely used in ACs, exhaust fans, extractors, range hoods, heating ducts, vents and other residential, commercial and industrial applications

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BW5Z19B1 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #3,945 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #7 in HVAC Ducting |
| Brand | Kikerike |
| Color | Sliver |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,074) |
| Date First Available | February 18, 2023 |
| Item Weight | 8.8 ounces |
| Manufacturer | Kikerike |
| Material | Aluminum, Stainless Steel |
| Maximum Gap Fill | 4 Inches |
| Number of Pieces | 2 |
| Package Dimensions | 7.32 x 4.65 x 4.13 inches |
| Size | 4 Inch - 2PCS |

## Product Details

- **Brand:** Kikerike
- **Color:** Sliver
- **Material:** Aluminum, Stainless Steel
- **Maximum Gap Fill:** 4 Inches
- **Number of Pieces:** 2

## Images

![2 Pcs 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector - Image 1](https://m.media-amazon.com/images/I/61i+UNr3ZtL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ I can’t believe it worked so well
*by D***N on November 22, 2025*

Each time the A/C or furnace kicked on it would draw outside air in through the vent hood. Cold in the winter and hot in the summer. The temperature under the hood was significant and very noticeable. So I installed this draft blocker in the pipe in the attic, separating the pipe at a joint inserting the valve and reconnecting the pipes. I seal the joints with aluminum tape. The draft blocker has a weather strip inside sealing it when not in use. I did have to reseal the pipe where it passed through the roof with roof tar to restore the water seal. It works great, the is no back draft now when the A/C is running and made a huge difference. I would recommend and buy again.

### ⭐⭐⭐⭐⭐ Happy with this product it does what they say it does.
*by A***R on October 4, 2025*

These work great for what I need them for. They open and close a few times a day and have been working that way for about seven months now. Simple to install not much else to say.

### ⭐⭐⭐⭐⭐ Great product
*by J***P on November 16, 2025*

Works well and looks nice. Quality product

## Frequently Bought Together

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-03-03*