The Rapid Response 250 ceiling mounted header box fan features quiet operation and powerful air flow performance. It includes a fully optimised inlet cone and centrifugal impeller that maximises air pressure and ensures rooms are quickly cleared of steam and unpleasant odours. It includes a unique swing clip and removable spigot that makes it very easy to install into a standard 10” round fan cut out. Available with a modern square or round grille. The blades and motor are carefully matched to maximise performance and efficiency. Low resistance non-return backdraft damper maximises air flow performance. Can be retrofitted into a standard 10” round fan cut out. Fitted plug and lead simplifies installation. Includes high quality sealed for life ball bearings.