The range of Centrifugal fans, offer a very simple way, to ventilate in restricted spaces using ducting up to 200 mm diameter. These slim centrifugal fans offer the high-pressure development and the SVS offers in addition reduced sound levels using sound reducing insulation to provide quiet air movement.. Because they are a powerful these fans ensure that the system will move air even when the system resistance is much higher than expected. Thus the SV range is able to quietly cope with moderate runs of flexible duct as well as spiral ducting. Installation is easy with simple mounting feet included with the fan. Can be mounted in any position including bottom access for false ceilings. Easy connection to ducting using pipe clamps (BM pipe clamps an accessory).