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Ventilation

Knightsbridge ventilation for bathrooms, built around 100mm extractor fans with an overrun timer that keeps running after the light goes off. Options include a humidistat model that responds to moisture, LED backlit fans with one version each in white, matt black and brushed steel with warm white edging, and IP45-rated bodies for damp rooms. Finishing parts include an aluminium ducting option, flyscreen vents and gravity shutters.

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The ventilation range

This ventilation range is built for bathrooms and kitchens, around 100mm extractor fans with an overrun timer that keeps the fan running for a period after the light goes off. That covers the most common need, clearing steam and moisture from a bathroom or smaller kitchen once the room has been used.

Fan options

Alongside the standard timer models there are humidistat versions that respond to moisture in the air, and LED backlit fans in matt black and brushed steel with warm white edging where you want the fan to double as a light. Bodies are rated for damp rooms, so they suit bathrooms as well as kitchens and utility spaces.

Ducting and finishing parts

The range also covers the parts that complete an install, including aluminium ducting to carry air to the outside, flyscreen vents for the external wall, and gravity shutters that sit behind the grille. These are the pieces that turn a fan into a working run rather than a unit on its own.

How to choose

Start with the fan body. A plain overrun timer suits a room used on a routine, while a humidistat is worth it where moisture builds quickly and you want the fan to respond on its own. Choose an LED backlit model in matt black or brushed steel where the fan also needs to give light, then add ducting, a vent and a shutter to finish the run.

Fitting it together

A typical install pairs a 100mm extractor fan with a length of aluminium ducting, an external flyscreen vent and a gravity shutter to stop draughts blowing back in. The flyscreen keeps insects out at the outside wall, while the gravity shutter sits behind the grille and opens only when the fan runs. Match the finish of the fan, in white, black, matt black or brushed steel, to the room it sits in, and pick a vent in a matching white or black to keep the external face tidy. Free delivery worldwide on all orders over £99.

Frequently Asked Questions

What does the overrun timer do?
The overrun timer keeps the fan running for a set period after you turn the light or fan off, clearing lingering steam and moisture. It is useful in bathrooms and shower rooms where damp air builds up quickly and you want it cleared after each use.

What is a humidistat fan for?
A humidistat model senses the moisture level in the air and switches the fan on automatically once humidity rises above a set point. This helps manage condensation in bathrooms and utility spaces without you needing to remember to run the fan.

What ducting and vent parts are included?
The range includes a 3.3m aluminium ducting kit sized for 100mm fans and supplied with jubilee clips, plus flyscreen wall vents and gravity shutters that close when the fan is off. These parts let you run the extracted air outside and keep insects out.

How is an extractor fan installed?
Fans are sized for a 100mm duct and are wired to the mains, often linked to the bathroom light circuit so the overrun timer works. Because this is fixed wiring connected to the mains, we recommend installation is carried out by a qualified electrician.

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