Is this a one piece adaptor (150mm>100mm) or two pieces together (150mm>125mm then 125mm>100mm)?

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

New extractor fan 120mm outlet. Existing flexible hose 100mm. Anything needed besides this and clip?

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 😉

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Kair 125mm to 100mm Round Duct Reducer | Fits over fittings (bends etc), For dryer vents and cooker hoods and extractor fans, Suitable for grow tents and hydroponics

Product ID: 48535372

Details

Brand
Kair
Colour
White
Connector type
Coupling Plug
Item dimensions L x W x H
5.1 x 5.1
Item weight
41 g
Material
Plastic

⚡Lightweight 41g plastic build

📏125mm to 100mm precision fit

🔧Push-fit compatible spigots

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Description

🔄 Upgrade your airflow game with the ultimate ducting adapter!

OPTIMIZED AIRFLOW - Designed to maintain efficient ventilation for dryers, extractor fans, and cooker hoods.
PUSH FIT CONVENIENCE - 125mm female spigot fits over connectors for quick, tool-free installation.
COMPACT LIGHTWEIGHT - Slim 5.1cm profile and 41g weight ensure easy handling and minimal space usage.
UNIVERSAL COMPATIBILITY - Works flawlessly with Kair SYS-100 & SYS-125 ranges plus standard ducting systems.
SEAMLESS SIZE TRANSITION - Effortlessly converts 125mm ducting to 100mm for versatile ventilation setups.

The Kair Straight Ducting Reducer/Adaptor (DUCVKC603) is a precision-engineered plastic fitting that converts 125mm ducting to 100mm, compatible with Kair’s SYS-100 and SYS-125 ventilation systems. Lightweight and easy to install with push-fit spigots, it ensures efficient airflow for tumble dryers, extractor fans, and kitchen ventilation, making it a must-have for professional-grade HVAC setups.

Specifications

ASIN	B004X4S7QI
Best Sellers Rank	2,909 in DIY & Tools ( See Top 100 in DIY & Tools ) 3 in Ducting
Brand	Kair
Colour	White
Connector Type	Coupling, Plug, Reducer
Country of Origin	United Kingdom
Customer Reviews	4.5 4.5 out of 5 stars (2,615)
Item Dimensions	5.1 x 5.1 centimetres
Item Weight	41 g
Manufacturer	Kair
Material	Plastic
Model Number	DUCVKC603
Number of Pieces	1
Part Number	DUCVKC603
Size	125mm to 100mm
Thread Size	125mm, 100mm

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$21.12

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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Received my product in pristine condition. Great service overall.

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