Ltpgtthis comprehensive range of 4quot fans from manrose have been designed for wall ceiling or window mounting for use in bathrooms toilets or kitchens quiet and efficient the 100mm 4quot series has an impressive extract rate of 85mampsup3hr 23 litres per second the units are are all manufactured using high abs thermoplastics for strength durability aesthetics and easy cleaning wf100 series designed for window mounting through a standard 115 155mm amposlash holeltp