Pull Cord Operated Make sure your bathroom is always clear of excess steam using this pull cord operated extractor fan. It s easily turned on and off exactly when you need it to ensure your bathroom stays free from excess moisture. The pull cord is normally fitted next to the light switch or pull for total convenience. Axial Axial type fans cause gas to flow through in an axial direction which is parallel to the shaft where the blades rotate, making the flow axial at exit and entry. Axial fans are designed to create a pressure difference and force which produces a flow through the fan. 21 Ltr/s Extraction Rate Building regulations stipulate that extractor fans need to be able to extract at least 15 litres of air per second. It s needed to ensure a minimal build-up of moisture .