Nuaire Flatmaster Positive Pressure Ventilation Unit. For properties without loft space such as flats or apartments. Cures condensation, dampness, mould and Improves indoor air quality. Easy installation and very low maintenance - filter clean or replacement every 18 months The unit is designed to take fresh air from outside, clean the air and discharge it into the central hallway via a system of ducting., Weight: 10.36 pounds, Manufacturer: Nuaire