Greenwood Centrifugal Surface Mounted Low Voltage Bathroom Fan With Timer, Humidistat & Pullcord - SF90SVIHT over-100 This type of installation requires

This type of installation requires a more powerful motor as the extracted air will generally have to travel further than a standard through wall installation

recessed centrifugal fan

Insulated ducting allows air to travel further without condensing and is recommended for cold space installations

The 'Contemporary' theme is a set of three different interchangeable inserts each of which can be located in the centre of the fan grille to enhance the design theme of the room

In most cases the replacement air comes in under the door of the room

Greenwood Centrifugal Surface Mounted Low Voltage Bathroom Fan With Timer, Humidistat & Pullcord - SF90SVIHT over-100 This type of installation requiresThe SF90SVIHT is a Low voltage surface mounted centrifugal fan with humidistat and run on timer. Humidstat fans have a sensor in them. This detects moisture in the air. When a set humidity point is reached the fan will switch on. There are two types of sensor Traditional and Digital Intelligent. Traditional. Work by having a fixed humidity level which, when reached, the fan activates. Traditional humidistats work well but as natural levels of humidity