Is the 10cm the size of the 'flaps' or the width of the whole unit?

the size is not applicable to either of the above , it refers to the size of ducting you can attach to the grill tohere is the actual sizes for the gravity grill 100mm / 10cm Product Type Wall VentHeight (mm) 155Length (mm) 155Width (mm) 40Spigot size (mm) 28 x 96 x 96

Does anyone know if when the extractor is on are the flaps meant to open up? Mines doesn’t seem to open up at all.

Assuming the extractor fan is blowing out through the grille, the flaps should open. How far they open depends on the strength of the air-flow from the fan.

What is the pitch of the fixing holes, looking for 110mm horizontal by 100mm vertical.

The fixing holes on this product correspond to the measurement you are looking for 110mm wide between securing holes x 100mm high between securing holes

Has anyone used this on an plastic outdoor keter shed?

should be fine with a suitable interface sealant

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Kair White Ø100mm Gravity Wall Vent Grille with Backdraught Shutters

Kair White Ø100mm Gravity Wall Vent Grille with Backdraught Shutters

Product ID: 48826074

Details

Brand
Kair
Colour
White
Finish type
Painted
Product dimensions
10.2D x 39.4W
Special feature
Automatic

🌀7200mm² free airflow

🔄Automatic non-return shutters

⚙️Push-fit 4 inch spigot

11162 Ft

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Description

🛠️ Upgrade your airflow game—vent smarter, live fresher!

SMART GRAVITY SHUTTERS - Automatic backdraught prevention without fragile springs—durability meets innovation.
EFFORTLESS INSTALLATION - Push-fit 100mm spigot design for quick, tool-free setup—get it done in minutes.
SEAMLESS AIRFLOW EFFICIENCY - Maximize ventilation with 7200mm² free air area for optimal indoor air quality.
REGULATION READY PERFORMANCE - Compliant with Part F Building Regulations and independently tested for airflow.
VERSATILE VENTILATION SOLUTION - Perfect for bathrooms, kitchens, HVAC, and whole-house ventilation systems.

The Kair White Ø100mm Gravity Wall Vent Grille features a 7200mm² free airflow area and automatic non-return shutters that prevent backdraughts, odors, and noise. Designed with a push-fit 4 inch spigot for easy installation, it suits indoor and outdoor use in bathrooms, kitchens, and HVAC systems. Independently tested and compliant with Part F Building Regulations, this durable polypropylene vent grille ensures efficient, maintenance-free ventilation.

Specifications

ASIN	B004X4RVUQ
Batteries Required?	No
Batteries included?	No
Best Sellers Rank	1,799 in DIY & Tools ( See Top 100 in DIY & Tools ) 1 in Boilers & Accessories
Brand	Kair
Colour	White
Compatible Devices	cooker_hood
Control Console	Manual
Customer Reviews	4.5 4.5 out of 5 stars (4,950)
Date First Available	19 April 2011
Efficiency (10 classes)	A+++ to G
Guaranteed software updates until	unknown
Included Components	Non-return shutter flaps, 4 inch / 100mm round male spigot
Item Weight	81.6 g
Material Type	Polypropylene
Model	SYS-100
Part Number	DUCVKC243
Product Dimensions	15.5 x 4 x 15.5 cm; 81.65 g
Special Features	Automatic Non-Return Shutters

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11162 Ft

Duties & taxes included

In stock

Sold byAmazon HungaryDelivered 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 Hungary.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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Perfect platform for hard-to-find items. Delivery was prompt.

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