---
product_id: 72686694
title: "Kair Ducting Adaptor 220mm x 90mm to 150mm - 6 inch Rectangular to Round Straight Channel Connector for Converting to Different Size Duct Systems"
brand: "kair"
price: "€ 55.18"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.it/products/72686694-kair-ducting-adaptor-220mm-x-90mm-to-150mm-6-inch
store_origin: IT
region: Italy
---

# 150mm (6 inch) round spigot 220mm x 90mm rectangular fit Temp range -15°C to +60°C Kair Ducting Adaptor 220mm x 90mm to 150mm - 6 inch Rectangular to Round Straight Channel Connector for Converting to Different Size Duct Systems

**Brand:** kair
**Price:** € 55.18
**Availability:** ✅ In Stock

## Summary

> 🔄 Connect with Confidence: The ultimate ducting adaptor for flawless airflow transitions!

## Quick Answers

- **What is this?** Kair Ducting Adaptor 220mm x 90mm to 150mm - 6 inch Rectangular to Round Straight Channel Connector for Converting to Different Size Duct Systems by kair
- **How much does it cost?** € 55.18 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/72686694-kair-ducting-adaptor-220mm-x-90mm-to-150mm-6-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

- • **Regulation Ready:** Complies with Part F Building Regulations for peace of mind and professional standards.
- • **Space-Savvy Design:** Compact connector ideal for tight installation spots—maximize your setup efficiency.
- • **Push-Fit Simplicity:** Quick, tool-free installation with durable, high-quality UK-made plastic materials.
- • **Seamless Size Conversion:** Effortlessly switch between rectangular and round duct systems without hassle.
- • **Proven Airflow Performance:** Independently tested to ensure minimal pressure drop and optimal ventilation.

## Overview

The Kair Ducting Adaptor converts 220mm x 90mm rectangular ducts to 150mm round ducts, crafted from durable UK-made polystyrene/polypropylene. Designed for easy push-fit installation, it supports temperatures from -15°C to +60°C and meets Part F Building Regulations. Perfect for bathroom, kitchen, HVAC, and ventilation systems, it ensures superior airflow with independently tested low pressure drops.

## Description

Kair Ducting Adaptor 220mm x 90mm to 150mm - 6 inch Rectangular to Round Straight Channel Connector  RECTANGULAR 220mm x 90mm  The flat end is a female spigot and fits over 220mm x 90mm Rectangular Duct Pipe Part: DUCVKC5704 or flexible hose Part: DUCR3M/220/90.  ROUND 150mm /6 inch  Circular end is a 150mm round male spigot that that fits inside 150mm round duct pipe Part: DUCVKC670 or flexible hose Part: DUCP0092/152/35.  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 (Pa): 60 l/s = 1.7 Pa 120 l/s = 5.4 Pa 180 l/s = 10.8 PaPerfectly 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.

## Features

- RECTANGULAR END: 220mm x 90 Fits over rectangular duct pipe.
- ROUND END: 150mm (6 inch) Fits inside round pipe of flexible hose.
- Allows you to convert between round and rectangular ducting systems.
- Kair short rectangular to round connector is perfect for installs where space is limited.
- Compatible with the extensive range of Kair plastic ducting fittings, outlets, and grilles

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Kair |
| Part Number | DUCVKC5713 |
| Package Dimensions | 26.8 x 20.3 x 19.8 cm; 300 g |
| Manufacturer reference | DUCVKC5713 |
| Size | 220mm x 90mm to 150mm |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 300 g |

## Images

![Kair Ducting Adaptor 220mm x 90mm to 150mm - 6 inch Rectangular to Round Straight Channel Connector for Converting to Different Size Duct Systems - Image 1](https://m.media-amazon.com/images/I/41oZGLSph6L.jpg)

## Available Options

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

## Questions & Answers

**Q: Will this be compatible with elica flat ducting which is 222mm x 89mm**
A: No , needs to be round 6"

**Q: does this fit on to most portable air con units please**
A: No, you would need to check the size of the hose - this one is 100mm in diameter 
some are 125mm depending on the manufacturer

**Q: Would this vent an ac units hose through a letterbox? Thanks.**
A: Yes it will but you will need another adaptor which Amazon had on a buy both option.This slim adaptor is a god send and were using it as I write .

**Q: Will this fit a 6ich tube**
A: Hello 
If you look on the sizes . It says 100mm diameter. Which is approximately only 
4" .so no it wont fit 6"

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good
*by L***Y on 18 April 2025*

Good quality arrived on time but its too big for what we wanted it for

### ⭐⭐⭐⭐⭐ Does it's job., great price.
*by J***N on 24 December 2023*

My son's cooker hood currently vented out of a roof tile vent that was straight up from the extractor hood in his bungalow, so warm moist kitchen air into a cold attic created condensation inside the ducting, the colder the loft space was, to the extent that sometimes water was running backwards into the hood.My solution was to take the 150mm duct up at a slight angle from vertical to another right angle, then to a 150mm round to 220/90mm adaptor from round to rectangle, onto a similar sized flexible ducting, over the wall plate into the soffit void & out via a 150mm round vent grill, adding insulation to the ducting should hopefully cure the problem as most of the ducting run now runs downhill towards the vent.I got this with some other ventilation bits, handy to locate all in one order via Amazon, paid a fair price without any hassle of having to locate various different parts. The item is all as expected, fits well & finishes off the job nicely.

### ⭐⭐⭐⭐ Pretty good
*by M***C on 4 November 2023*

Not a bad adaptor, used in dual pairs to cross-over-under a set of ducts that were in an awkward height in my MVHR setup, eliminating a low-spot in the ducting that could have been a problem later on.It also came in quite handy for passing a duct over a pair of wooden beams that I couldn't cut through for the 100mm round pipe because it was load-bearing. It fitted with a good inch to spare, which was good as it left room for insulation around the ductwork.The end result is a professional-looking rigid setup that should last many years to come, instead of resorting to flexible ducting which always looks like a messy afterthought.The only let down is there are a couple of internal seams which protrude, but a few seconds with some sandpaper easily flattened those down.

## Frequently Bought Together

- Kair Ducting Adaptor 220mm x 90mm to 150mm - 6 inch Rectangular to Round Straight Channel Connector for Converting to Different Size Duct Systems
- Kair Rectangular Flat Ducting 220mm x 90mm - 1 Metre Length Flat Channel Pipe
- Kair 90 Degree Vertical Elbow Bend 220mm x 90mm - 9 x 4 inch Rectangular Plastic Ducting Adaptor

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-01-30*