Silhouette 150X is a 1-Speed Kitchen Fan, with electric back draught shutter. It is designed for modern living, profile of only 19mm on the kitchen models, Silhouette blends in with the wall surface to provide an unobtrusive installation. It is mounted in the centre of the fan, beneath the ultra slim profile grille, are the electronics, incorporating a humidistat for detecting a change in internal humidity or an overrun timer option that is adjustable between 5 and 30 minutes.