High-quality first layer electrostatic dust filter captures charged dust, pollen, and other allergens. Second layer UP photocatalytic titanium filter adsorbs and decomposes odors. Filter model: Folds filter BAC006A4C, BAC017A4C. Applicable models: MC70KMV2 series and MCK57LMV2 series, including MC709MV2, MC70KMV2-N, MC70KMV2-R, MC70KMV2-A, MC70KMV2-K, MCK57LMV2-W, MCK57LMV2-R, MCK57LMV2-K, MCK57LMV2-A, MCK57LMV2-N, MC709MV2. Technical specifications: Filtration efficiency 90% for 0.3 μm NaCl (H10). Unit mass deviation: 175 g. Resistance: 8 Pa. Permeability: 700 L/m²·s. Color: Blue. Material: PP+PET. Package contents: 5 x filters. Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product. Measurement error allowed is +/- 1-3 cm.