Replacement filter for Roger Air Purifier should be replaced every 8 - 12 months. The Dual Filter is a combination of HEPA and activated carbon filter, the HEPA part filters pollutants out of the air, such as fine dust, pollen, viruses and bacteria and the activated carbon filter adsorbs gases (bad smells, tobacco smoke, formaldehyde, toluene, volatile organic compounds, etc.) Filter material made in Germany. Features: Filter material made in Germany Combination of HEPA and activated carbon Replace every 8 - 12 months Specifications: Dimensions: H:36.0 x W:34.0 x D:4.0 cm Colour: White Manufacturer's Guarantee:2 years Material: Plastic Model Number: R-013
