DuPont Carbon Layer Replacement for TruSens Z2000 Air Purifier, 3 Pack Filter replacement is essential for your air purifier to perform at its best. The activated carbon layer removes certain gasses and odours from the air. Features The carbon layer not only captures odours and gasses, but it also offers the first level of defence against dust and pet hair This layer is what needs to be replaced on the HEPA drum filter For best results, replace carbon layer filter every 3 months Change indicator light is displayed on purifier when filter needs to be replaced Compatible with TruSens Z2000 Air Purifier Specifications Use With: Z-2000 Air Purifier Fits With: AFHZ2000-01 Type: Carbon Best For: Standard Filtration Dimensions: 12.0 x 6.5 x 21.5 cm Period of Warranty: None Life Expectancy: 3 - 4 months Washable: Not Washable Dated_Indicator: Undated