---
product_id: 51173976
title: "MKK Ko100-22 Building Material:, White, Klein(Packaging May Vary)"
brand: "mkk"
price: "€ 11.30"
currency: EUR
in_stock: true
reviews_count: 13
category: "Mkk"
url: https://www.desertcart.ie/products/51173976-mkk-ko100-22-building-material-white-klein-packaging-may-vary
store_origin: IE
region: Ireland
---

# 100mm diameter fits standard ducts PVC plastic for rust-free durability Gravity flap design for silent airflow MKK Ko100-22 Building Material:, White, Klein(Packaging May Vary)

**Brand:** mkk
**Price:** € 11.30
**Availability:** ✅ In Stock

## Summary

> 🌬️ Elevate your airflow game with silent, sleek efficiency!

## Quick Answers

- **What is this?** MKK Ko100-22 Building Material:, White, Klein(Packaging May Vary) by mkk
- **How much does it cost?** € 11.30 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/51173976-mkk-ko100-22-building-material-white-klein-packaging-may-vary)

## Best For

- mkk enthusiasts

## Why This Product

- Trusted mkk brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Seamless 100mm Fit:** Perfectly matches standard duct sizes for hassle-free installation
- • **Silent Gravity Flap:** Ingenious unsprung flap ensures whisper-quiet ventilation
- • **Dual-Purpose Venting:** Acts as both backdraught and odour eliminator for fresher air
- • **Rust-Proof PVC Build:** Durable plastic construction eliminates corrosion worries
- • **Versatile Indoor/Outdoor Use:** Sleek white finish complements any modern space, inside or out

## Overview

The MKK Ko100-22 is a 100mm diameter white PVC vent designed for seamless integration with standard duct pipes. Featuring a rust-proof gravity flap mechanism, it ensures silent, efficient ventilation while preventing backdraughts and odors. Ideal for both indoor and outdoor use, this modern vent combines durability with minimalist style, making it a smart upgrade for any ventilation system.

## Description

Shop MKK Ko100-22 Building Material:, White, Klein(Packaging May Vary). Free delivery on eligible orders of £20 or more.

Review: Seems to be fine. - Wanting to replace two rubbish "Silavent" ceiling extractor fans with inline fans, I needed to source to vents with shutters, but none were available. So I bought two KAIR vents and two of these. They fit standard 4" (100mm) solid or flexible duct pipe. These are unsprung gravity flaps, so they need to be fitted nothing but vertically to operate properly. Fitted any other way and they won't close. They are also best fitted at the vent in the ceiling so they become dual purpose backdraught and odour eliminators. They seem good quality and due to them not having springs, there's nothing to go rusty and stop working.
Review: Works great but better with flexible pipe - Great easy way to avoid installing a new gravity or cowl vent. I thought it would push fit on the fan and rigid pipe at 100mm, however this is not the case as it’s exactly the same diameter as the duct pipe of 100mm. Therefore just used duct tape to join to a flexible pipe and it’s fine. Cut off half inch of insulation tape and taped to bottom of vent to stop any clanking noise and it’s pretty Much silent. A bit pricey for a flimsy bit of plastic but it works

## Features

- Material: PVC plastic
- Colour: white
- Diameter: 100 mm
- Kitchen
- Volume: 0.001 m3

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00FCE0RSE |
| Assembled Diameter | 1 Centimetres |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 86,628 in Garden ( See Top 100 in Garden ) 2,329 in Garden Hose Parts & Connectors |
| Certification | CE, RoHS |
| Colour | White |
| Customer Reviews | 4.3 4.3 out of 5 stars (3,499) |
| Cutting Diameter | 1 Centimetres |
| Date First Available | 27 Jan. 2021 |
| Finish | White |
| Included Components | No |
| Item Package Quantity | 1 |
| Item Weight | 50 g |
| Item model number | KO100-22 |
| Manufacturer | MKK |
| Material | Polyvinyl Chloride |
| Number of Pieces | 1 |
| Part Number | A289a_SML |
| Shape | round |
| Size | Klein |
| Style | Modern |
| Usage | Inside, Outside |

## Product Details

- **Brand:** MKK
- **Colour:** White
- **Connector type:** Check Valve
- **Exterior finish:** Glatte Kunststoffoberfläche
- **Item dimensions L x W x H:** 10 x 10 x 6 centimetres
- **Material:** Polyvinyl Chloride
- **Number of pieces:** 1
- **Size:** Klein
- **Thread size:** M100
- **Thread type:** UN

## Images

![MKK Ko100-22 Building Material:, White, Klein(Packaging May Vary) - Image 1](https://m.media-amazon.com/images/I/21+ZIu88swL.jpg)
![MKK Ko100-22 Building Material:, White, Klein(Packaging May Vary) - Image 2](https://m.media-amazon.com/images/I/21GyHRFfkpL.jpg)
![MKK Ko100-22 Building Material:, White, Klein(Packaging May Vary) - Image 3](https://m.media-amazon.com/images/I/21oxGGIT5lL.jpg)
![MKK Ko100-22 Building Material:, White, Klein(Packaging May Vary) - Image 4](https://m.media-amazon.com/images/I/21qu1StHymL.jpg)
![MKK Ko100-22 Building Material:, White, Klein(Packaging May Vary) - Image 5](https://m.media-amazon.com/images/I/21zlsJQDbwL.jpg)

## Questions & Answers

**Q: Do this product have a spring to close the back shutter? Or does is use gravity to close it once the flow stops?**
A: Gravity - it does rattle in the wind

**Q: Can this be fitted on a 45 deg slop downwards to the outside vent and will it still work fully? Thanks**
A: Oh not so sure it will stay closed at that angle. I have mine fitted on a flat surface and it works perfect.

**Q: Is this product suitable for extracting cooking fumes and steam?**
A: Hi 
I have used this item to prevent a back draught in ducting for an online bathroom steam extraction system.

**Q: On an in-line fan. where is the best place to put one of these? before the fan or after? and does it go onto the fan spigots? or the end of the ducts?**
A: It goes after the fan in the exhaust direction to prevent draughts returning through the vent back into the room/device being vented. It is designed to fit in line in the pipework and will need glueing into rigid pipework or securing with a large pair of jubilee clips into flexible pipes whether plastic or aluminium. You should find on a reasonable external vent kit that it also contains a non return flap, however if you're hooking up multiple rooms in series (i.e. on a single pipe), these also reduce the amount of noise which leaks through the vents

## Customer Reviews

### ⭐⭐⭐⭐⭐ Seems to be fine.
*by S***. on 26 October 2022*

Wanting to replace two rubbish "Silavent" ceiling extractor fans with inline fans, I needed to source to vents with shutters, but none were available. So I bought two KAIR vents and two of these. They fit standard 4" (100mm) solid or flexible duct pipe. These are unsprung gravity flaps, so they need to be fitted nothing but vertically to operate properly. Fitted any other way and they won't close. They are also best fitted at the vent in the ceiling so they become dual purpose backdraught and odour eliminators. They seem good quality and due to them not having springs, there's nothing to go rusty and stop working.

### ⭐⭐⭐⭐⭐ Works great but better with flexible pipe
*by M***L on 22 June 2020*

Great easy way to avoid installing a new gravity or cowl vent. I thought it would push fit on the fan and rigid pipe at 100mm, however this is not the case as it’s exactly the same diameter as the duct pipe of 100mm. Therefore just used duct tape to join to a flexible pipe and it’s fine. Cut off half inch of insulation tape and taped to bottom of vent to stop any clanking noise and it’s pretty Much silent. A bit pricey for a flimsy bit of plastic but it works

### ⭐⭐⭐⭐ Works well and easy to fit
*by A***R on 12 March 2020*

I had 2 bathroom inline fans that allowed stronger winds to cool the bathrooms and create drafts. The backdraft shutters were very easy to install. The first fitted snugly over the fan spigot and the flexible hose was easy to secure to the other side of the shutter. The second fan spigot was the same diameter as the shutter so could only be butted up and secured with duck tape. Not ideal but functional and secure. The drafts have been considerably reduced and a good solution.

## Frequently Bought Together

- Connector with Backflow Flap, Check Valve, Connector, Ventilation Pipe, Round Duct, Ventilation System, Pipe Connector, Diameter 100 mm, White
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- AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust

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---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-13*