QuietAir QT 100TB combines contemporary design with ultra-low noise levels and outstanding energy efficiency. The quietest fan available complying with building regulations "installed performance" requirements when ducted. Suitable for toilets, en-suites and bathrooms; and you will hardly hear the fan running, even at night! Basic Switching, Adjustable Timer, Adjustable Humidity Timer, and Passive Infra-red control options available. Addition features include room refresh, removable front covers, and two speed operation means QuietAir is flexible to your needs.