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 100mm Gravity Wall Vent Grille with Backdraught Shutters

Kair White 100mm 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

🔧Push-fit 100mm spigot

🚫Automatic non-return shutters

₨26015

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Description

🌬️ Elevate your airflow game with effortless, silent protection!

BACKDRAUGHT BLOCKER PRO - Gravity-operated shutters close automatically, stopping odours, noise, and draughts cold.
SNAP SEAL INSTALLATION - Push-fit 100mm round spigot for quick, tool-free setup—no fuss, no delays.
EFFORTLESS AIRFLOW MASTERY - 7200mm² free air area ensures optimal ventilation without compromise.
VERSATILE VENTING SOLUTION - Perfect for bathrooms, kitchens, HVAC, and hydroponics—future-proof your air quality.
BUILT FOR COMPLIANCE CONFIDENCE - Meets Part F Building Regulations with independently tested airflow performance.

The Kair White 100mm Gravity Wall Vent Grille features a 7200mm² free air area and a 100mm push-fit spigot for easy installation. Its gravity-operated non-return shutters automatically prevent backdraughts, odours, and noise, making it ideal for bathrooms, kitchens, and HVAC systems. Independently tested and compliant with Part F Building Regulations, this durable polypropylene vent grille offers a reliable, maintenance-free ventilation upgrade.

Specifications

ASIN	B004X4RVUQ
Batteries Required?	No
Batteries included?	No
Best Sellers Rank	1,754 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 (4,944)
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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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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₨26015

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered 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 Sri Lanka.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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Received my product in pristine condition. Great service overall.

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