This comprehensive range of 4\" fans from Manrose have been designed for Wall, Ceiling or Window mounting for use in bathrooms, toilets or kitchens. Quiet and efficient the 100mm (4\") series has an impressive extract rate of 85m³/hr, 23 litres per second. The units are are all manufactured using high ABS thermoplastics for strength, durability, aesthetics and easy cleaning. XF100 Series designed for wall mounting (pullcord version wall mounting only) through 100mm (4\") diameter flexible or rigid pipes or Manrose low profile, flat channel ducting systems.