General description This air purifier carbon fiber evaporator filter is compatible with PH01, PH02, PH03, and PH04 air purifiers. It is designed to maintain optimal performance by ensuring effective filtration and evaporation. Technical specifications Material: Plastic Package Contents: 3 x Filters, 1 x Cleaning Brush Allowed measurement error: +/- 1-3 cm Usage Regular replacement of the evaporator filter is essential as prolonged use can lead to a loss of carbon fiber, diminishing its filtration and adsorption capabilities, and negatively impacting the evaporation effect. Other information Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.