---
product_id: 209376297
title: "AC Infinity Backdraft Damper 4\" One-Way Heavy-Duty Airflow Ducting Insert"
brand: "ac infinity"
price: "NZ$69"
currency: NZD
in_stock: true
category: "Ac Infinity"
url: https://www.desertcart.nz/products/209376297-ac-infinity-backdraft-damper-4-one-way-heavy-duty-airflow
store_origin: NZ
region: New Zealand
---

# spring-loaded aluminum blades 4-inch precision fit airtight rubber gasket seal AC Infinity Backdraft Damper 4" One-Way Heavy-Duty Airflow Ducting Insert

**Brand:** ac infinity
**Price:** NZ$69
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your airflow game with the ultimate backdraft defender!

## Quick Answers

- **What is this?** AC Infinity Backdraft Damper 4" One-Way Heavy-Duty Airflow Ducting Insert by ac infinity
- **How much does it cost?** NZ$69 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/209376297-ac-infinity-backdraft-damper-4-one-way-heavy-duty-airflow)

## Best For

- ac infinity enthusiasts

## Why This Product

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

## Key Features

- • **Perfect 4" Fit:** Seamlessly integrates with standard duct openings for hassle-free installation.
- • **Versatile Mounting:** Install horizontally or vertically to suit any HVAC setup with confidence.
- • **Airtight Seal Technology:** Outer rubber gaskets lock in airflow, eliminating drafts and energy loss.
- • **Smart Spring-Loaded Blades:** Automatically open with minimal airflow, preventing backflow and debris intrusion.
- • **Durable Galvanized Steel Body:** Built to last with powder-coated corrosion resistance for long-term reliability.

## Overview

The AC Infinity Backdraft Damper 4" is a heavy-duty, precision-engineered duct insert designed to prevent backflow and debris in HVAC systems. Featuring a galvanized steel body, airtight rubber gaskets, and spring-loaded aluminum blades, it ensures efficient, draft-free ventilation for range hoods, bathroom fans, and more. Its versatile mounting options and powder-coated finish make it a durable, professional-grade solution trusted by thousands.

## Description

AC Infinity Backdraft Damper 4" One-Way Heavy-Duty Airflow Ducting Insert | Antidraft Duct Insert w/ Airtight Seal & Spring-Loaded Aluminum Folding Blades for Ducting in Range Hoods and Bathroom Fans - desertcart.com

## Features

- An antidraft duct insert designed for use with range hoods, bathroom fans and other home HVAC applications.
- Features outer rubber gaskets that create an airtight seal and grip between the damper and ducts.
- Mounts horizontally or vertically to prevent backflow and debris from entering ducting.
- Galvanized steel body with spring-loaded aluminum damper blades that open with minimal airflow.
- Fit for 4 in. Duct Openings | Product Length: 5.03 inches | Finish: Powder Coat

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0842XSTV9 |
| Best Sellers Rank | #38,318 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #48 in HVAC Ducting |
| Brand Name | AC Infinity |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,053) |
| Item Dimensions | 5 x 3.81 x 3.81 inches |
| Item Highlight | Antidraft Duct Insert w/ Airtight Seal & Spring-Loaded Aluminum Folding Blades for Ducting in Range Hoods and Bathroom Fans |
| Manufacturer | AC Infinity |
| Manufacturer Part Number | AC-BDD4-B |
| Material Type | Alloy Steel, Aluminum |
| Model Number | AC-BDD4-B |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Size | 4" |
| UPC | 819137021303 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** AC Infinity
- **Color:** Black
- **Item dimensions L x W x H:** 5 x 3.81 x 3.81 inches
- **Manufacturer:** AC Infinity
- **Material:** Alloy Steel, Aluminum
- **Number of Packs:** 1
- **Number of Pieces:** 1
- **Size:** 4"
- **Unit Count:** 1 Count

## Images

![AC Infinity Backdraft Damper 4" One-Way Heavy-Duty Airflow Ducting Insert - Image 1](https://m.media-amazon.com/images/I/51lALiYTYEL.jpg)

## Available Options

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

## Frequently Bought Together

- AC Infinity 4" Backdraft Damper, One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 4” Ducting in Range Hoods and Bathrooms Fans
- AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust
- AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 8-Feet Long for Heating Cooling Ventilation and Exhaust

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.nz/products/209376297-ac-infinity-backdraft-damper-4-one-way-heavy-duty-airflow](https://www.desertcart.nz/products/209376297-ac-infinity-backdraft-damper-4-one-way-heavy-duty-airflow)

---

*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-10-14*