---
product_id: 410140948
title: "Kair 100mm Round Duct Connector with Backdraught Shutter"
brand: "kair"
price: "€ 48.02"
currency: EUR
in_stock: true
reviews_count: 5
category: "Kair"
url: https://www.desertcart.de/products/410140948-kair-100mm-round-duct-connector-with-backdraught-shutter
store_origin: DE
region: Germany
---

# Gravity damper flap stops backflow 100mm / 4 inch perfect fit Push-fit easy installation Kair 100mm Round Duct Connector with Backdraught Shutter

**Brand:** kair
**Price:** € 48.02
**Availability:** ✅ In Stock

## Summary

> 🌀 Stop the backflow, start the airflow — ducting done right!

## Quick Answers

- **What is this?** Kair 100mm Round Duct Connector with Backdraught Shutter by kair
- **How much does it cost?** € 48.02 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/410140948-kair-100mm-round-duct-connector-with-backdraught-shutter)

## 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

- • **Durable High-Quality Plastic:** Crafted from robust polystyrene/polypropylene to withstand temperatures from -15°C to +60°C.
- • **Effortless Push-Fit Assembly:** Quick, tool-free installation that saves time and keeps your ventilation system airtight.
- • **Seamless 100mm Compatibility:** Fits perfectly inside 100mm round pipes or 102mm flexible hoses for versatile ducting solutions.
- • **Universal Kair System Integration:** Easily connects with any female part of the Kair 100 range for a fully customizable ducting setup.
- • **Backdraught Blocker with Gravity Flap:** Innovative non-return damper flap prevents unwanted smells, cold air, and noise without fragile springs.

## Overview

The Kair 100mm Round Duct Connector with Backdraught Shutter is a precision-engineered plastic fitting designed to join 100mm round pipes or 102mm flexible hoses. Featuring a gravity-operated damper flap, it effectively blocks backflow of odors, cold air, and noise without the risk of spring failure. Lightweight yet durable, it withstands temperatures from -15°C to +60°C and integrates seamlessly with the Kair 100 ducting system, making it ideal for kitchens, bathrooms, tumble dryers, and hydroponics ventilation setups.

## Description

100mm / 4 inch Kair Plastic Ducting Connector with backdraught shutter / non return damper flap Male Spigot will fit inside Kair 100mm Round Pipe Part: DUCVKC250 or 102mm Flexible Hose Part: DUCP0092/102/35 and can be used to join multiple lengths of pipe together to form a long duct run. Stops unpleasant odours, noises, or draughts flowing back through your duct. With a gravity flap - no need for springs that break! Use when you need to stop smells flowing backwards within ducting, or when you have 2 or more extractor fans connected to same duct run. Round rigid ducting provides superior airflow performance vs. comparative size rectangular or flexible duct. Pressure Drop in Pascals: 15 l/s = 25.0 Pa - 30 l/s = 44.90 Pa - 60 l/s = 101.60 Pa. Easy to install and durable, just push-fit duct and fittings together. For permanent fixings, seal joints with silicone sealant or tape Will join any Female part of the Kair System 100 range. Built to last out of high-quality white Polystyrene/Polypropylene plastic Material. Max / Min Temperature: +60c / -15c. Suitable to use in compliance with Part F Building Regulations. Search for Kair Ducting for the full range of compatible Round and Rectangular fittings, outlets, and grilles.

Review: Made of thin abs plastic. I thought they would ... - Made of thin abs plastic. I thought they would be more durable for the price. If I didn't need them I would have returned them.
Review: non servono a nulla - scarsa la tenuta in controflusso, nel mio caso ho risolto con serranda motorizzata con flap dotato di guarnizioni di tenuta ....... che ha ben altro costo rispetto a questa serranda di plastica. piuttosto che niente meglio piuttosto, ma non aspettativi chissà quali prestazioni, per quello che costano un tentativo fatelo, magari per le vostre esigenze sono sufficienti.

## 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 | B004X4RJL2 |
| ASIN  | B004X4RJL2 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #37,253 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #31 in Heating & Cooling Ducting Products #1,370 in Bathroom Hardware & Installation |
| Color | White |
| Customer Reviews | 4.2 4.2 out of 5 stars (2,703) |
| Customer reviews | 4.2 4.2 out of 5 stars (2,703) |
| Date First Available | 12 January 2016 |
| Date First Available  | 12 January 2016 |
| Is Discontinued By Manufacturer  | No |
| Item Package Quantity | 1 |
| Item Weight | 49.9 g |
| Manufacturer | Kair |
| Manufacturer  | Kair |
| Manufacturer reference | DUCEK28 |
| Manufacturer reference  | DUCEK28 |
| Material | Polystyrene |
| Part number | DUCEK28 |
| Product Dimensions | 10.01 x 5.99 x 10.01 cm; 49.9 g |
| Product Dimensions  | 10.01 x 5.99 x 10.01 cm; 49.9 g |
| Size | 100mm |

## Images

![Kair 100mm Round Duct Connector with Backdraught Shutter - Image 1](https://m.media-amazon.com/images/I/51QNZBmA9mL.jpg)
![Kair 100mm Round Duct Connector with Backdraught Shutter - Image 2](https://m.media-amazon.com/images/I/61en6qrLh3L.jpg)
![Kair 100mm Round Duct Connector with Backdraught Shutter - Image 3](https://m.media-amazon.com/images/I/51hszl1Jb5L.jpg)
![Kair 100mm Round Duct Connector with Backdraught Shutter - Image 4](https://m.media-amazon.com/images/I/61yTX-wCgNL.jpg)
![Kair 100mm Round Duct Connector with Backdraught Shutter - Image 5](https://m.media-amazon.com/images/I/61kuHq+ytSL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐ Made of thin abs plastic. I thought they would ...
*by A***R on 13 February 2017*

Made of thin abs plastic. I thought they would be more durable for the price. If I didn't need them I would have returned them.

### ⭐ non servono a nulla
*by A***S on 6 October 2017*

scarsa la tenuta in controflusso, nel mio caso ho risolto con serranda motorizzata con flap dotato di guarnizioni di tenuta ....... che ha ben altro costo rispetto a questa serranda di plastica. piuttosto che niente meglio piuttosto, ma non aspettativi chissà quali prestazioni, per quello che costano un tentativo fatelo, magari per le vostre esigenze sono sufficienti.

### ⭐⭐⭐⭐⭐ Fit for purpose, with some modification.
*by B***N on 26 January 2025*

Bought this to retro fit in the ducting of a 12v Manrose bathroom fan which, for some reason and unlike its predecessor, came without a backdraft shutter. As other buyers have mentioned, its a tight fit in 100mm ducting and I had to trim the outer central ridge on the shutter to fit it inside the ducting. Used a very sharp paperhangers knife to shave a millimetre or so from the ridge and it now fits perfectly, held in place, just in case, by a blob or two of silicone. Its working well so far: yes, it clatters when the wind blows but that goes with the territory when, as we do, you live in a windy coastal town. Not sure how long it'll last given the wear that the wind will place on the shutter's basic hinges, but Time will tell. Very easy to retro fit if you have the access, so recommended.

## 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

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-07-30*