---
product_id: 39006650
title: "Premium In-Line 5 inch Duct Back Draft Blockers"
brand: "battic door energy conservation products"
price: "FREE"
currency: SGD
in_stock: false
category: "Home Improvement"
url: https://www.desertcart.sg/products/39006650-premium-in-line-5-inch-duct-back-draft-blockers
store_origin: SG
region: Singapore
---

# Premium In-Line 5 inch Duct Back Draft Blockers

**Brand:** battic door energy conservation products
**Price:** FREE
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Premium In-Line 5 inch Duct Back Draft Blockers by battic door energy conservation products
- **How much does it cost?** FREE with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/39006650-premium-in-line-5-inch-duct-back-draft-blockers)

## Best For

- battic door energy conservation products enthusiasts

## Why This Product

- Trusted battic door energy conservation products brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

5 inch premium diameter backdraft damper. Our Premium Back Draft Damper is a non-mechanical in-line one way air flow valve that requires minimal pressure to operate, has no moving parts and tested to UL 723 standards. Get the full force of your fan with this non-restrictive damper which fits snugly inside the duct. 5 sizes available. Our Premium Back Draft Damper is the ultimate one way air flow valve, designed to overcome the inefficiencies and limitations of traditional gravity or butterfly dampers. The damper consists of a specially formulated fabric sleeve attached to an outer metal sleeve. The fabric sleeve will allow air to pass through in the desired direction of flow with miniscule reduction in airflow. Our Premium Back Draft Damper is the best damper available. It is superior in that it allows unrestricted airflow in the desired direction without reducing system efficiency. It is silent, produces no metal clanging sounds, tested to UL723 standards and can be installed in horizontal or vertical ductwork. Specifically designed to stop backdrafts from your clothes dryer, bathroom exhaust fan, kitchen fan, pellet stove, direct vent water heater and direct vent furnace. Tested to UL723 standard for flame resistance. Available in 4, 5, 6, 7, and 8 in. sizes! Installs easily - simply slide into duct. &quot;During the windy winter months, the damper keeps performing with NO CLANGING!&quot; - Sara P., Wasilla, AK.

## Features

- Stop Air Drafts Through Your Bathroom Fan!
- Fits Any Bath Fan Standard 5" Duct!
- Save on your home heating costs with our Bath Exhaust Fan Draft-Blocker!
- Our Bath Exhaust Fan Draft-Blocker is a one-waydevice that helps prevent air flow into the house.
- MADE IN USA, EASY TO INSTALL
- ›See more product details

## Images

![Premium In-Line 5 inch Duct Back Draft Blockers - Image 1](https://m.media-amazon.com/images/I/51I9fbcH3dL.jpg)
![Premium In-Line 5 inch Duct Back Draft Blockers - Image 2](https://m.media-amazon.com/images/I/51bN-MVRg+L.jpg)
![Premium In-Line 5 inch Duct Back Draft Blockers - Image 3](https://m.media-amazon.com/images/I/41E4mXH8itL.jpg)
![Premium In-Line 5 inch Duct Back Draft Blockers - Image 4](https://m.media-amazon.com/images/I/61rpbBjY2hL.jpg)
![Premium In-Line 5 inch Duct Back Draft Blockers - Image 5](https://m.media-amazon.com/images/I/41QPqzbgSHL.jpg)

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**Shop now:** [https://www.desertcart.sg/products/39006650-premium-in-line-5-inch-duct-back-draft-blockers](https://www.desertcart.sg/products/39006650-premium-in-line-5-inch-duct-back-draft-blockers)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-12*