Can this be placed horizontal , above a ceiling extractor fan , like the ones we have over the kitchen extractor hood over the hob??

This particular backdraft shutter can be installed vertically or horizontally as the flap has a non return, meaning it will only open up one way just take care to install it the right way round

What makes the spigot close, I don't see any springs? I use a sprung butterfly type and the spring is not strong enough which is why I'asking, thanks

It relays on gravity mine dose the job I rate it 5 *

My years old solid duct pipe through a wall is 4" (102mm) od, with an id of 98mm. this connector clearly won't fit, is there another solution?

This connector is designed to join two sections of vent pipe hence the raised section which locates between the two pipe ends• To fit this unit into a single pipe as in a normal bathroom vent fan it is necessary to remove the raised portion of the annular ring to reduce the diameter• i used a file and it fitted perfectly, silicon sealant can be used to fix the location within the tube. The tube has to be concentric otherwise the unit will be crushed and will not operate.

On a bathroom fan extractor assembly through a loft is it necessary to tape up the joints and if so, what's the best tape to use?

If your joining the tube to extraction fan and oven extraction i used a cable tie. I have not joined flexi tube to tube but if i had i would have used duck tape.hope this helps Dave

Kair 100mm Round Duct Connector With Backdraught Shutter

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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MX$685

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Sold byAmazon MexicoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Elevate your airflow game—seal out drafts and odors like a pro!

PRECISION 100 MM FIT - Engineered to snugly fit 100mm round pipes or 102mm flexible hoses for flawless integration.
MODULAR DUCT EXTENSION - Easily join multiple duct lengths to create custom ventilation runs tailored to your space.
DURABLE UK MADE ABS PLASTIC - Crafted from high-quality materials built to withstand temperatures from -15°C to +60°C, ensuring longevity and compliance with Part F Building Regulations.
BACKDRAUGHT SHUTTER TECHNOLOGY - Gravity-operated damper flap prevents unwanted smells, cold air, and noise from reversing through your ductwork—no fragile springs involved.
VERSATILE VENTILATION COMPATIBILITY - Ideal for tumble dryers, extractor fans, hydroponics, cooker hoods, and HVAC systems—join any female Kair ducting component for a complete airflow solution.

The Kair 100mm Round Duct Connector with Backdraught Shutter is a precision-engineered ABS plastic fitting designed to seamlessly connect 100mm round pipes or 102mm flexible hoses. Featuring a gravity-operated damper flap, it effectively blocks backflow of odors, cold air, and noise without the risk of spring failure. Made in the UK and compliant with Part F Building Regulations, this durable connector is perfect for extending duct runs in a variety of ventilation applications including extractor fans, tumble dryers, and HVAC systems.

Specifications

ASIN	B004X4S5UG
Batteries Required?	No
Batteries included?	No
Best Sellers Rank	7,629 in DIY & Tools ( See Top 100 in DIY & Tools ) 12 in Ducting
Colour	White
Customer Reviews	4.1 4.1 out of 5 stars (1,586)
Date First Available	27 May 2020
Guaranteed software updates until	unknown
Item Package Quantity	1
Item Weight	40.8 g
Item model number	DUCVKC303
Manufacturer	Kair
Material	ABS Plastic
Part Number	DUCVKC303
Product Dimensions	10.31 x 10.31 x 5.79 cm; 40.82 g
Size	100mm (With Flap)

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