---
product_id: 48320019
title: "Kair Connector with Backdraught Shutter 100mm - 4 inch Non-Return Damper Flap to Connect Duct Pipe or Flexible Ducting Hose"
brand: "kair"
price: "A$27"
currency: AUD
in_stock: true
reviews_count: 13
category: "Kair"
url: https://www.desertcart.com.au/products/48320019-kair-connector-with-backdraught-shutter-100mm-4-inch-non-return
store_origin: AU
region: Australia
---

# 100mm / 4 inch perfect fit Seamless duct pipe connection Backdraught shutter blocks odors & cold air Kair Connector with Backdraught Shutter 100mm - 4 inch Non-Return Damper Flap to Connect Duct Pipe or Flexible Ducting Hose

**Brand:** kair
**Price:** A$27
**Availability:** ✅ In Stock

## Summary

> 🚫💨 Stop the draft, keep the fresh—vent smarter, live better!

## Quick Answers

- **What is this?** Kair Connector with Backdraught Shutter 100mm - 4 inch Non-Return Damper Flap to Connect Duct Pipe or Flexible Ducting Hose by kair
- **How much does it cost?** A$27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/48320019-kair-connector-with-backdraught-shutter-100mm-4-inch-non-return)

## Best For

- kair enthusiasts

## Why This Product

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

## Key Features

- • **Precision 100mm Fit:** Designed to snugly fit 100mm round pipes or 102mm flexible hoses for effortless installation.
- • **Lightweight & Durable:** Crafted from robust ABS plastic weighing just 40.8g, ensuring long-lasting performance without bulk.
- • **Versatile Compatibility:** Works seamlessly with Kair ducting range and multiple pipe lengths to create custom ventilation solutions.
- • **Plug & Play Installation:** No batteries or tools required—simply connect and enjoy improved airflow control instantly.
- • **Smart Backdraught Shutter:** Automatically opens with airflow and closes to prevent unwanted smells and cold drafts—energy efficiency meets comfort.

## Overview

The Kair Connector with Backdraught Shutter is a 100mm (4 inch) ABS plastic ducting connector featuring an inline gravity damper flap that prevents backflow of odors and cold air. It fits inside standard 100mm pipes or 102mm flexible hoses and is ideal for ventilation setups including tumble dryers, extractor fans, and cooker hoods. Lightweight and easy to install, it enhances airflow control while maintaining energy efficiency.

## Description

Free delivery and returns on all eligible orders. Shop Kair Connector with Backdraught Shutter 100mm - 4 inch Non-Return Damper Flap to Connect Duct Pipe or Flexible Ducting Hose.

Review: Works really well. - This works really well, it has a plastic lip half way down which you can shave a bit off to fit inside / in the middle of a 100mm tube. They're hard to get in stores for some reason, but it works really well, as soon as the fan starts it opens, then closes when it's off.
Review: Good product - Good design and works at a good price

## Features

- 100mm / 4 inch plastic ducting connector with inline backdraught shutter / gravity damper flap.
- Stop smells and prevent cold air coming through your extract fan or ducting.
- Will fit inside 100mm round pipe or 102mm flexible hose and can be used to join multiple lengths of pipe together to form a long duct run.
- Perfectly suited for ducting your Tumble Dryer, Bathroom or Kitchen extractor fan, Hydroponics, In-Line Extract Fans, or Cooker Hood and other ventilation applications.
- Will join any Female part of the Kair ducting range.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004X4S5UG |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 3,594 in DIY & Tools ( See Top 100 in DIY & Tools ) 5 in Ducting |
| Colour | White |
| Customer Reviews | 4.2 4.2 out of 5 stars (2,815) |
| Date First Available | 27 May 2020 |
| Item Package Quantity | 1 |
| Item Weight | 40.8 g |
| Item model number | DUCVKC303 |
| Manufacturer | Kair |
| Material | ABS Plastic |
| Part Number | DUCVKC303 |
| Product Dimensions | 10.31 x 10.31 x 5.79 cm; 40.82 g |
| Size | 100mm (With Flap) |

## Images

![Kair Connector with Backdraught Shutter 100mm - 4 inch Non-Return Damper Flap to Connect Duct Pipe or Flexible Ducting Hose - Image 1](https://m.media-amazon.com/images/I/51QNZBmA9mL.jpg)
![Kair Connector with Backdraught Shutter 100mm - 4 inch Non-Return Damper Flap to Connect Duct Pipe or Flexible Ducting Hose - Image 2](https://m.media-amazon.com/images/I/61en6qrLh3L.jpg)
![Kair Connector with Backdraught Shutter 100mm - 4 inch Non-Return Damper Flap to Connect Duct Pipe or Flexible Ducting Hose - Image 3](https://m.media-amazon.com/images/I/51hszl1Jb5L.jpg)
![Kair Connector with Backdraught Shutter 100mm - 4 inch Non-Return Damper Flap to Connect Duct Pipe or Flexible Ducting Hose - Image 4](https://m.media-amazon.com/images/I/61yTX-wCgNL.jpg)
![Kair Connector with Backdraught Shutter 100mm - 4 inch Non-Return Damper Flap to Connect Duct Pipe or Flexible Ducting Hose - Image 5](https://m.media-amazon.com/images/I/61kuHq+ytSL.jpg)

## Available Options

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

## Questions & Answers

**Q: Can this be placed horizontal , above a ceiling extractor fan , like the ones we have over the kitchen extractor hood over the hob??**
A: This particular backdraft shutter can be installed vertically or horizontally as the flap has a non return, meaning it will only open up one way just take care to install it the right way round

**Q: What makes the spigot close, I don't see any springs?  I use a sprung butterfly type and the spring is not strong enough which is why I'asking, thanks**
A: It relays on gravity mine dose the job I rate it 5 *

**Q: My years old solid duct pipe through a wall is 4" (102mm) od, with an id of 98mm. this connector clearly won't fit, is there another solution?**
A: This connector is designed to join two sections of vent pipe hence the raised section which locates between the two pipe ends•
To fit this unit into a single pipe as in a normal bathroom vent fan it is necessary to remove the raised portion of the annular ring to reduce the diameter• i used a file and it fitted perfectly, silicon sealant can be used to fix the location within the tube.
The tube has to be concentric otherwise the unit will be crushed and will not operate.

**Q: On a bathroom fan extractor assembly through a loft is it necessary to tape up the joints and if so, what's the best tape to use?**
A: If your joining the tube to extraction fan and oven extraction i used a cable tie. I have not joined flexi tube to tube but if i had i would have used duck tape.hope this helps Dave

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works really well.
*by J***N on 5 February 2026*

This works really well, it has a plastic lip half way down which you can shave a bit off to fit inside / in the middle of a 100mm tube. They're hard to get in stores for some reason, but it works really well, as soon as the fan starts it opens, then closes when it's off.

### ⭐⭐⭐⭐⭐ Good product
*by P***G on 19 February 2026*

Good design and works at a good price

### ⭐⭐⭐⭐ A good price.
*by N***W on 15 February 2026*

Returned as wasn't needed. But the quality looked good in the packaging.

## Frequently Bought Together

- Kair Connector with Backdraught Shutter 100mm - 4 inch Non-Return Damper Flap to Connect Duct Pipe or Flexible Ducting Hose
- TUPARKA 4 Pack Large Size Metal Hose Clips 91-114 mm Adjustable Ducting Clamps for Securing Hoses and Pipes Tube
- Manrose, MF100T, black

---

## 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.com.au/products/48320019-kair-connector-with-backdraught-shutter-100mm-4-inch-non-return](https://www.desertcart.com.au/products/48320019-kair-connector-with-backdraught-shutter-100mm-4-inch-non-return)

---

*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-13*