Lo-Watt Manrose loft Positive Input Ventilation. Designed to prevent and treat condensation and mould quickly. Features carry handle, purpose designed diffuser and radon mode. Adjustable between 11 and 60 l/s in normal mode and 10 and 59 l/s in trickle mode. Supplied with 2 m flexible duct, G4 filters, diffuser and both a floor mounting base and hanging kit for installation in any size loft.