which size of the screw should be used for fixing to ceiling ?

I would glue they fit well if you cut the right size hole

What is total micemebt

Sorry, don't understand 'micemebt. I found the unit to be well made and not too obtrusive. However, I couldn't fins a way to adjust the inner control disc from below. I could only adjust it from above, which for me is in the loft. I could be missing something. I also bought back draft flaps which I put in line on the exhaust side of the fan. This stops unwanted draft coming in on windy days.

Tried to install today, and I'm stuck. How do you secure the white white metal collar to the steel duct? It just falls straight through

There's a twisting motion to secure to an internal shallow thread if I recall. Then the centre bit can rotate against a screw/nut to enlarge or shrink the hole/gap.

Does this require a fixing collar?

I didn't use one, the 100mm hole was tight enough that it didn't need one

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Kair Ceiling Extract Valve 125mm - 5 inch White Coated Metal Vent

Kair Ceiling Extract Valve 125mm - 5 inch White Coated Metal Vent

Product ID: 60919461

Details

Brand
Kair
Exterior finish
Powder-Coated
Global Trade Identification Number
Inlet connection size
5 Inches
Inlet connection type
Threaded
Item dimensions L x W x H
16.5 x 16.5 x

🎨white powder-coated metal finish

🔒lock nut airflow control

⚙️125mm adjustable spigot fit

€ 44.22

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌬️ Elevate your air game with sleek, adjustable ventilation!

SEAMLESS INTEGRATION - Flush-fit design with a sleek white powder-coated finish that complements modern interiors.
DURABLE BUILD QUALITY - Constructed from epoxy-coated steel with a galvanised mounting ring for long-lasting performance.
HASSLE FREE MAINTENANCE - Wipe-clean surface keeps your space looking fresh and professional with minimal effort.
UNIVERSAL COMPATIBILITY - Fits standard 125mm round pipes and 127mm flexible hoses for versatile installation.
PRECISION AIRFLOW CONTROL - Easily adjust and lock airflow with a smooth rotating disc for perfect ventilation.

The Kair Ceiling Extract Valve is a high-quality, white powder-coated metal vent designed for efficient air extraction. Featuring a 125mm adjustable spigot compatible with standard ducting, it offers precise airflow control via a rotating disc and lock nut. Its flush, wipe-clean design suits modern interiors, while durable epoxy-coated steel construction ensures longevity. Ideal for internal use, it complies with Part F Building Regulations and integrates seamlessly with Kair’s extensive ventilation range.

Specifications

ASIN	B004X4SC90
Batteries Required?	No
Batteries included?	No
Best Sellers Rank	14,542 in DIY & Tools ( See Top 100 in DIY & Tools ) 46 in Registers, Grilles & Vents
Colour	White
Customer Reviews	4.3 4.3 out of 5 stars (22)
Date First Available	19 April 2011
Guaranteed software updates until	unknown
Item Weight	358 g
Item model number	5060272541408
Manufacturer	Kair
Material	Epoxy Coated Steel
Number of Pieces	1
Part Number	DUCMW124
Product Dimensions	16.51 x 16.51 x 5.99 cm; 358.34 g
Size	125mm Extract

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TrustScore 4.5 | 7,300+ reviews

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