---
product_id: 52216924
title: "Round Connector 100mm - 4 inch to Connect Duct Pipe or Flexible Ducting Hose"
brand: "kair"
price: "€ 22.67"
currency: EUR
in_stock: true
reviews_count: 13
category: "Kair"
url: https://www.desertcart.gr/products/52216924-round-connector-100mm-4-inch-to-connect-duct-pipe-flexible
store_origin: GR
region: Greece
---

# 100mm / 4 inch precision fit Universal duct & hose compatibility Lightweight durable polystyrene Round Connector 100mm - 4 inch to Connect Duct Pipe or Flexible Ducting Hose

**Brand:** kair
**Price:** € 22.67
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect your airflow like a pro — ducting made effortless!

## Quick Answers

- **What is this?** Round Connector 100mm - 4 inch to Connect Duct Pipe or Flexible Ducting Hose by kair
- **How much does it cost?** € 22.67 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/52216924-round-connector-100mm-4-inch-to-connect-duct-pipe-flexible)

## 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

- • **Lightweight & Durable:** Crafted from sturdy polystyrene, ensuring longevity without adding bulk.
- • **Effortless Installation:** Male spigot design with a plastic lip allows easy insertion and secure fitting.
- • **Universal Compatibility:** Joins any female part of the 100mm plastic duct range, including Kair’s own ducting system.
- • **Seamless 100mm Connection:** Perfectly fits 100mm round pipes & 102mm flexible hoses for hassle-free duct runs.
- • **Versatile Ventilation Solution:** Ideal for tumble dryers, extractor fans, hydroponics, cooker hoods, and more.

## Overview

The Kair Round Connector 100mm is a lightweight, durable polystyrene ducting accessory designed to seamlessly join 100mm round pipes and 102mm flexible hoses. Compatible with the entire 100mm plastic duct range, it’s perfect for enhancing ventilation systems in kitchens, bathrooms, hydroponics setups, and more, ensuring efficient airflow with easy installation.

## Description

Free delivery and returns on all eligible orders. Shop Kair Round Connector 100mm - 4 inch 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: Ideal - Perfect and did the job

## Features

- 100mm / 4 inch plastic ducting connector with male spigot.
- 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.
- Will join any female part of the 100mm plastic duct range including the Kair ducting range.
- Perfectly suited for ducting your Tumble Dryer, Bathroom or Kitchen extractor fan, Hydroponics, In-Line Extract Fans, or Cooker Hood and other ventilation applications.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004X4RJL2 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 1,805 in DIY & Tools ( See Top 100 in DIY & Tools ) 3 in Ducting |
| Colour | White |
| Customer Reviews | 4.2 4.2 out of 5 stars (2,795) |
| Date First Available | 19 April 2011 |
| Item Package Quantity | 1 |
| Item Weight | 49.9 g |
| Manufacturer | Kair |
| Manufacturer reference | DUCEK28 |
| Material | Polystyrene |
| Part Number | DUCEK28 |
| Product Dimensions | 10.01 x 5.99 x 10.01 cm; 49.9 g |
| Size | 100mm |

## Images

![Round Connector 100mm - 4 inch to Connect Duct Pipe or Flexible Ducting Hose - Image 1](https://m.media-amazon.com/images/I/41M11qtSu7L.jpg)

## Available Options

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

## 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.

### ⭐⭐⭐⭐⭐ Ideal
*by J***S on 13 December 2025*

Perfect and did the job

### ⭐⭐⭐⭐ Good,not perfect.
*by T***L on 15 February 2020*

It was fairly easy to fit, you do need to get some large jubilee clips. It does work, but there are problems, when we had some strong winds the shutter went "over centre" and jammed open. I put a small screw in to stop it going too far. When the shutter is open as much as it will go, there is still some restriction to the flow of air. It is a bit noisy when the wind is gusty, opening and closing.

## Frequently Bought Together

- Kair Round Connector 100mm - 4 inch to Connect Duct Pipe or Flexible Ducting Hose
- Kair Plastic Ducting Pipe 100mm - 4 inch / 1 Metre Long Length - Rigid Straight Duct Channel
- Kair 90 Degree Elbow Bend 100mm - 4 inch Round Plastic Ducting Joint to Connect Round Duct Pipe or Flexible Hose

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**Shop now:** [https://www.desertcart.gr/products/52216924-round-connector-100mm-4-inch-to-connect-duct-pipe-flexible](https://www.desertcart.gr/products/52216924-round-connector-100mm-4-inch-to-connect-duct-pipe-flexible)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-03-05*