---
product_id: 48535372
title: "Kair Straight Ducting Reducer/Adaptor - SYS-125 / SYS-100 - DUCVKC603 125 mm to 100 mm Kair"
brand: "kair"
price: "$U1137"
currency: UYU
in_stock: true
url: https://www.desertcart.uy/products/48535372-kair-straight-ducting-reducer-adaptor-sys-125-sys-100-ducvkc603
store_origin: UY
region: Uruguay
---

# 125mm to 100mm precision fit Dual spigot compatibility Lightweight durable plastic Kair Straight Ducting Reducer/Adaptor - SYS-125 / SYS-100 - DUCVKC603 125 mm to 100 mm Kair

**Brand:** kair
**Price:** $U1137
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade your airflow game with precision and ease!

## Quick Answers

- **What is this?** Kair Straight Ducting Reducer/Adaptor - SYS-125 / SYS-100 - DUCVKC603 125 mm to 100 mm Kair by kair
- **How much does it cost?** $U1137 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/48535372-kair-straight-ducting-reducer-adaptor-sys-125-sys-100-ducvkc603)

## 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

- • **Push-Fit Ready:** Designed to snugly fit over push-fit connectors for quick, tool-free installation.
- • **Compact & Lightweight:** Slim 5.08 cm profile and just 40.8g for easy handling and minimal space usage.
- • **Multi-Application Use:** Ideal for tumble dryers, extractor fans, hydroponics, and kitchen ventilation setups.
- • **Universal Compatibility:** Fits perfectly with Kair SYS-100 and SYS-125 ducting systems and accessories.
- • **Seamless Size Transition:** Effortlessly converts 125mm ducting to 100mm for versatile airflow solutions.

## Overview

The Kair Straight Ducting Reducer/Adaptor DUCVKC603 is a lightweight, plastic ventilation accessory that converts 125mm ducting to 100mm. Compatible with Kair's SYS-100 and SYS-125 systems, it ensures seamless integration for various ventilation needs including tumble dryers, extractor fans, and kitchen hoods.

## Description

Full description not available

## Features

- Adapter to convert 125mm to 100mm ducting - 5" to 4"
- On one side there is a 125mm female spigot. Fits over push-fit connectors (bends, etc.) Requires an additional 125mm plug to connect round 125mm pipe.
- On the other side there is a 100mm spigot. Fits in 100mm straight ducting
- Compatible with 100mm and 125mm ducting systems, including the extensive Kair SYS-100 and SYS-125 range of fittings, sockets and grilles.
- Perfectly suited for conducting your tumble dryer, bathroom or kitchen extractor fan, hydroponics, in-line fans or cooker hoods and other ventilation applications.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Kair |
| Part Number | DUCVKC603 |
| Product Dimensions | 5.08 x 5.08 x 0.01 cm; 40.82 g |
| Item model number | DUCVKC603 |
| Size | 125mm to 100mm |
| Colour | White |
| Material | Plastic |
| Shape | Rectangular |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Plug profile | wall mount |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 40.8 g |

## Product Details

- **Size:** 125mm to 100mm
- **Material:** Plastic
- **Brand:** Kair
- **Colour:** White
- **Item dimensions L x W x H:** 5.1 x 5.1 centimetres
- **Connector type:** Coupling, Plug, Reducer
- **Thread size:** 125mm, 100mm
- **Item weight:** 0.09 Pounds
- **Number of pieces:** 1
- **Manufacturer:** Kair

## Images

![Kair Straight Ducting Reducer/Adaptor - SYS-125 / SYS-100 - DUCVKC603 125 mm to 100 mm Kair - Image 1](https://m.media-amazon.com/images/I/415Hw3eWTlL.jpg)
![Kair Straight Ducting Reducer/Adaptor - SYS-125 / SYS-100 - DUCVKC603 125 mm to 100 mm Kair - Image 2](https://m.media-amazon.com/images/I/613-NFUqxVL.jpg)
![Kair Straight Ducting Reducer/Adaptor - SYS-125 / SYS-100 - DUCVKC603 125 mm to 100 mm Kair - Image 3](https://m.media-amazon.com/images/I/51fa6xd9vZL.jpg)
![Kair Straight Ducting Reducer/Adaptor - SYS-125 / SYS-100 - DUCVKC603 125 mm to 100 mm Kair - Image 4](https://m.media-amazon.com/images/I/51KNqw4oMJL.jpg)
![Kair Straight Ducting Reducer/Adaptor - SYS-125 / SYS-100 - DUCVKC603 125 mm to 100 mm Kair - Image 5](https://m.media-amazon.com/images/I/71t3r9eNHjL.jpg)

## Available Options

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

## Questions & Answers

**Q: Is this a one piece adaptor (150mm>100mm) or two pieces together (150mm>125mm then 125mm>100mm)?**
A: It was over a year ago, however from memory it was a one piece adapter which I used for an over the cooker extractor. Hope this is useful

**Q: New extractor fan 120mm outlet. Existing flexible hose 100mm. Anything needed besides this and clip?**
A: Not really. One end wedged onto my extractor fan and the other on the piping. I didn't have a clip so just used gaffa tape 😉

## Frequently Bought Together

- Kair Straight Ducting Reducer/Adaptor - SYS-125 / SYS-100 - DUCVKC603 125 mm to 100 mm Kair
- Kair PVC Flexible Hose 125mm - 5 inch Universal Tumble Drier, Cooker Hood, Extractor Fan, Air Conditioner Hose - 3 Metre Length
- 125mm Pack of 2 Adjustable 120-140mm Stainless Steel Pipe Clamp Secure Hose Clip Inline Duct Extractor Fan Cooker Hood

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**Shop now:** [https://www.desertcart.uy/products/48535372-kair-straight-ducting-reducer-adaptor-sys-125-sys-100-ducvkc603](https://www.desertcart.uy/products/48535372-kair-straight-ducting-reducer-adaptor-sys-125-sys-100-ducvkc603)

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-01-22*