---
product_id: 48320142
title: "Kair 110 mm x 54 mm Rectangular to Round (100 mm Male Spigot) 90 Degree Bend - SYS-100 - DUCVKC237 by Kair"
brand: "kair"
price: "$136913"
currency: COP
in_stock: false
url: https://www.desertcart.co/products/48320142-kair-110-mm-x-54-mm-rectangular-to-round-100
store_origin: CO
region: Colombia
---

# 90° bend 110mm x 54mm 100mm round Kair 110 mm x 54 mm Rectangular to Round (100 mm Male Spigot) 90 Degree Bend - SYS-100 - DUCVKC237 by Kair

**Brand:** kair
**Price:** $136913
**Availability:** ❌ Out of Stock

## Summary

> 🔧 Bend the Rules of Ducting!

## Quick Answers

- **What is this?** Kair 110 mm x 54 mm Rectangular to Round (100 mm Male Spigot) 90 Degree Bend - SYS-100 - DUCVKC237 by Kair by kair
- **How much does it cost?** $136913 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/48320142-kair-110-mm-x-54-mm-rectangular-to-round-100)

## 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

- • **Space-Saving Design:** Perfect for tight spaces with a 90-degree elbow bend.
- • **Transform Your Ducting:** Seamlessly convert between rectangular and round ducting systems.
- • **Effortless Installation:** Designed for quick and easy setup, no tools required.
- • **Lightweight Yet Durable:** Crafted from high-quality polypropylene for long-lasting use.
- • **Universal Compatibility:** Works flawlessly with Kair's range of fittings and outlets.

## Overview

The Kair 110 mm x 54 mm Rectangular to Round 90 Degree Bend (DUCVKC237) is a versatile ducting solution that allows for easy conversion between rectangular and round duct systems. Made from durable polypropylene, this lightweight adaptor is perfect for navigating tight spaces and is compatible with Kair's extensive range of fittings and outlets.

## Description

Kair Elbow Adapter 110mm x 54mm to 100mm - Rectangular to Round 90 Degree Bent Adapter - Male Rectangular 110mm x 54mm The flat end is a female spigot and fits over 110mm x 54mm rectangle pipe part: DUCVKC249 Round 100mm round end is a 100mm round connector fitting that fits into 100mm round duct pipe. Part: DUCVKC250 Allows you to convert round and rectangular ducting systems. Made in the UK from high quality polystyrene/polypropylene Max. Min. Temperature: +60°C / -15°C. Easy to install and durable, just clip the air duct and fittings together. For permanent fixings, seal joints with silicone sealant or tape. Air flow performance independently tested by BSRIA or BRE. Suitable for use in accordance with Part F building codes. Static pressure drop in Pascals: 15 l/s = 8.10 Pa - 30 l/s = 33.10 Pa - 60 l/s = 136.40 Pa. Perfect for extractor fans in bathroom or kitchen, hydroponics, in-line extractor fans, tumble dryers or cooker hood. This item can be used as part of a long line run for a variety of purposes including whole house ventilation, passive stack fan, positive input ventilation, air conditioning, HVAC and heat recovery systems. Kair plastic duct is ideal for DIY and crafts and provides excellent airflow performance and durability compared to flexible ducts.

## Features

- RECTANGULAR END: 110mm x 54mm Fits over rectangular duct pipe.
- ROUND END: 100mm (4 inch) Fits inside round duct pipe.
- Allows you to convert between 100mm round and 110mm x 54mm rectangular ducting systems.
- 90 Degree elbow bend adaptors allows you to run duct inside ceiling voids or other areas where space is restricted.
- Compatible with Kair plastic ducting range of fittings, outlets, and grilles.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Kair |
| Part Number | DUCVKC237 |
| Product Dimensions | 14.4 x 11.61 x 8.89 cm; 99.79 g |
| Item model number | DUCVKC237 |
| Size | 110mm x 54mm to 100mm (Male) |
| Colour | White |
| Material | Polypropylene |
| Item Package Quantity | 1 |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 99.8 g |

## Images

![Kair 110 mm x 54 mm Rectangular to Round (100 mm Male Spigot) 90 Degree Bend - SYS-100 - DUCVKC237 by Kair - Image 1](https://m.media-amazon.com/images/I/41DszoEqnvL.jpg)
![Kair 110 mm x 54 mm Rectangular to Round (100 mm Male Spigot) 90 Degree Bend - SYS-100 - DUCVKC237 by Kair - Image 2](https://m.media-amazon.com/images/I/61-mQbpvwPL.jpg)
![Kair 110 mm x 54 mm Rectangular to Round (100 mm Male Spigot) 90 Degree Bend - SYS-100 - DUCVKC237 by Kair - Image 3](https://m.media-amazon.com/images/I/51aqWG7+zwL.jpg)
![Kair 110 mm x 54 mm Rectangular to Round (100 mm Male Spigot) 90 Degree Bend - SYS-100 - DUCVKC237 by Kair - Image 4](https://m.media-amazon.com/images/I/51LFP9smHuL.jpg)
![Kair 110 mm x 54 mm Rectangular to Round (100 mm Male Spigot) 90 Degree Bend - SYS-100 - DUCVKC237 by Kair - Image 5](https://m.media-amazon.com/images/I/51fjr0PJuoL.jpg)

## Available Options

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

## Questions & Answers

**Q: Do u have Elbow Bend Adaptor for  6 inch**
A: Hi there, I didn't find this very obvious, so unlike safetyspot, I'll try and be a bit more helpful. You need to click on each size option and there are photos of that particular size plus a different diagram on each one with the dimensions on. Not all listings change according to the option you click on, there is just a standard photo and you choose your dimensions, however, this will show you exactly what it looks like and give you a diagram with the dimensions accordingly. 6 inches is just over 15cm so have a look at one that memtions that size and check the dimensions on the diagram.

**Q: Is this safe to connect to tumble dryer as the manufacturer instructions state thay aluminium must be used not plastic**
A: I used this as an exhaust for a portable air conditioning unit not a tumble dryer, but having sai that, the pipe from the tumble dryer that came with the tumble dryer was always warm but this item didn’t get as hot as the rest and of the pipe and it’s hard plastic, it coped fine and that was with the the crazy plus 40 temperatures in the uk last summer, I’d say that this item handles heat very well and a tumble drier shouldn’t be an issue, given my experience

**Q: What connector would i need to attach a 125mm od flexible hose to this kair plenum elbow bend adaptor 234mm x 29mm to 100mm**
A: Why not buy the right size in the first place? 125mm hose fits 125mm outlet. See range of available sizes on Kair’s website.

**Q: Could this be used as the inlet suction point for an extractor fan instead of the traditional ceiling/wall round vent?**
A: Hi as soon it matches your measurements;)

## Frequently Bought Together

- Kair 110 mm x 54 mm Rectangular to Round (100 mm Male Spigot) 90 Degree Bend - SYS-100 - DUCVKC237 by Kair
- Kair Rectangular Flat Ducting 110mm x 54mm - 1 Metre Length Flat Channel Pipe
- Kair Rectangular Straight Connector 100mm x 54mm Flat Pipe Joint

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-01-22*