---
product_id: 415221702
title: "Kair Ducting Adaptor 110mm x 54mm to 100mm - 4 inch Rectangular to Round Straight Channel Connector for Converting to Different Size Duct Systems"
brand: "kair"
price: "€ 48.89"
currency: EUR
in_stock: true
reviews_count: 5
category: "Kair"
url: https://www.desertcart.hr/products/415221702-kair-ducting-adaptor-110mm-x-54mm-to-100mm-4-inch
store_origin: HR
region: Croatia
---

# 100mm round spigot compatibility 110mm x 54mm rectangular fit Low static pressure drop for airflow Kair Ducting Adaptor 110mm x 54mm to 100mm - 4 inch Rectangular to Round Straight Channel Connector for Converting to Different Size Duct Systems

**Brand:** kair
**Price:** € 48.89
**Availability:** ✅ In Stock

## Summary

> 🔄 Transform your ducting game with precision and ease!

## Quick Answers

- **What is this?** Kair Ducting Adaptor 110mm x 54mm to 100mm - 4 inch Rectangular to Round Straight Channel Connector for Converting to Different Size Duct Systems by kair
- **How much does it cost?** € 48.89 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/415221702-kair-ducting-adaptor-110mm-x-54mm-to-100mm-4-inch)

## 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

- • **Optimized Airflow:** Independently tested with minimal static pressure drop to keep your ventilation smooth and efficient.
- • **Space-Smart Design:** Compact adaptor ideal for tight installation spots, maximizing your setup efficiency.
- • **Pro-Grade Durability:** Crafted from high-quality polystyrene/polypropylene for long-lasting, reliable performance.
- • **Plug & Play Installation:** Push-fit design for quick setup—seal with silicone for a permanent, airtight finish.
- • **Seamless Size Conversion:** Effortlessly switch between rectangular and round duct systems without hassle.

## Overview

The Kair Ducting Adaptor converts 110mm x 54mm rectangular ducts to 100mm round ducts, enabling versatile HVAC configurations. Made in the UK from durable polystyrene/polypropylene, it supports efficient airflow with low static pressure drop and fits perfectly in tight spaces. Ideal for bathroom, kitchen, and whole-house ventilation systems, this adaptor ensures professional-grade performance with easy push-fit installation.

## Description

Kair Ducting Adaptor 110mm x 54mm to 100mm - 4 inch Rectangular to Round Straight Channel Connector RECTANGULAR 110mm x 54mm The flat end is a female spigot and fits over 110mm x 54mm Rectangular Duct Pipe Part: DUCVKC249. ROUND 100mm / 4 inch Circular end is a 100mm round female spigot that will accept any male 100mm round fittings. br> Requires round duct connector Part: DUCEK28 to connect to 100mm straight pipe - Part: DUCVKC250. Allows you to convert between round and rectangular ducting systems.Made in the UK using high-quality Polystyrene/Polypropylene plastic.Max / Min Temperature: +60c / -15c.Easy to install and durable, just push-fit duct and fittings together. For permanent fixings, seal joints with silicone sealant or tape.Airflow performance independently tested by BSRIA or BRE.Suitable to use in compliance with Part F Building Regulations.Static Pressure Drop in Pascals: 15 l/s = 3.70 Pa - 30 l/s = 14.60 Pa - 60 l/s = 58.00 Pa.Perfectly suited for ducting your Bathroom or Kitchen extractor fan, hydroponics, in-line extract Fans, tumble dryer, or cooker hood. This item can be used as a part of a long ductwork run for a variety of purposes including whole house ventilation, passive stack vent, positive input ventilation, air conditioning, HVAC, and Heat Recovery systems. Kair plastic rigid ducting is perfect for DIY and Trade use and provides superior airflow performance and durability versus flexible duct.

Review: Muy buen material
Review: Duttile e condirne alle esigenze

## Features

- RECTANGULAR END: 110mm x 54mm Fits over rectangular duct pipe.
- ROUND END: 100mm (4 inch) Fits over other connectors and fittings, pipe requires additional connector.
- Allows you to convert between round and rectangular ducting systems.
- Kair short rectangular to round connector is perfect for installs where space is limited.
- Kair 100% Satisfaction Guarantee. Compatible with the extensive range of plastic ducting fittings, outlets, and grilles

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004X4S1K0 |
| ASIN  | B004X4S1K0 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #69,062 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #37 in Electrical Conduit Fittings |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (527) |
| Customer reviews | 4.6 4.6 out of 5 stars (527) |
| Date First Available | 12 January 2016 |
| Date First Available  | 12 January 2016 |
| Is Discontinued By Manufacturer  | No |
| Item Package Quantity | 1 |
| Item Weight | 90.7 g |
| Manufacturer | Kair |
| Manufacturer  | Kair |
| Manufacturer reference | DUCVKC253F |
| Manufacturer reference  | DUCVKC253F |
| Material | Polystyrene |
| Number Of Pieces | 1 |
| Part number | DUCVKC253F |
| Product Dimensions | 12 x 11.4 x 10.7 cm; 90.72 g |
| Product Dimensions  | 12 x 11.4 x 10.7 cm; 90.72 g |
| Size | 110mm x 54mm to 100mm |

## Product Details

- **Brand:** Kair
- **Colour:** White
- **Item dimensions L x W x H:** 12 x 11.4 x 10.7 centimeters
- **Material:** Polystyrene
- **Size:** 110mm x 54mm to 100mm

## Images

![Kair Ducting Adaptor 110mm x 54mm to 100mm - 4 inch Rectangular to Round Straight Channel Connector for Converting to Different Size Duct Systems - Image 1](https://m.media-amazon.com/images/I/412aFNbvm6L.jpg)
![Kair Ducting Adaptor 110mm x 54mm to 100mm - 4 inch Rectangular to Round Straight Channel Connector for Converting to Different Size Duct Systems - Image 2](https://m.media-amazon.com/images/I/41BZCtM3oSL.jpg)
![Kair Ducting Adaptor 110mm x 54mm to 100mm - 4 inch Rectangular to Round Straight Channel Connector for Converting to Different Size Duct Systems - Image 3](https://m.media-amazon.com/images/I/5131LDgJ4fL.jpg)
![Kair Ducting Adaptor 110mm x 54mm to 100mm - 4 inch Rectangular to Round Straight Channel Connector for Converting to Different Size Duct Systems - Image 4](https://m.media-amazon.com/images/I/51H3VyjWi-L.jpg)
![Kair Ducting Adaptor 110mm x 54mm to 100mm - 4 inch Rectangular to Round Straight Channel Connector for Converting to Different Size Duct Systems - Image 5](https://m.media-amazon.com/images/I/51aT4ddab0L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by R***N on 3 July 2020*

Muy buen material

### ⭐⭐⭐⭐⭐ Review
*by F***O on 13 November 2020*

Duttile e condirne alle esigenze

### ⭐⭐⭐⭐⭐ Review
*by B***T on 16 September 2018*

Tenia un tubo de ventilación sacado por la ventana y pillado con esta. Y se caía cada dos por tres y quedaba muy feo visto desde fuera. Con este adaptador lo pillas con la ventana y lo pegas con un poco de cinta americana y es mucho mas discreto y el tubo no se va a mover jamas.

## Frequently Bought Together

- Kair Ducting Adaptor 110mm x 54mm to 100mm - 4 inch Rectangular to Round Straight Channel Connector for Converting to Different Size Duct Systems
- Kair Rectangular Flat Ducting 110mm x 54mm - 1 Metre Length Flat Channel Pipe
- Kair 110 mm x 54 mm Rectangular to Round (100 mm Male Spigot) 90 Degree Bend - SYS-100 - DUCVKC237 by Kair

---

## 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.hr/products/415221702-kair-ducting-adaptor-110mm-x-54mm-to-100mm-4-inch](https://www.desertcart.hr/products/415221702-kair-ducting-adaptor-110mm-x-54mm-to-100mm-4-inch)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-07*