Ultra Quiet WC & Bathroom Extractor Fan - The Silent Design is a 100mm domestic axial extractor fan for wall or ceiling installations, designed to solve ventilation problems in WC’s and bathrooms. Fitted with motors mounted on silent elastic blocks, the fans deliver incredibly silent running and exceptional performance with stylish features. Innovative Silence - The Silent Design 100 extractor fan is the result of a long and meticulous development process by the Research, Development & Innovation Department at EnviroVent, who have patented a new concept; bringing about a revolutionary change in extractor fan design to extract the maximum airflow with the minimum noise possible.