and high qualityThe first layer electrostatic dust filters, capturing the charged dust, pollen and other allergens.The second layer UP photo catalytic titanium filters, adsorption and decomposition odor, filter Model :folds filter BAC006A4C, BAC017A4CApplicable models : MC70KMV2 series and MCK57LMV2 series MC709MV2MC70KMV2-N MC70KMV2-R MC70KMV2-A MC70KMV2-K, MCK57LMV2-W MCK57LMV2-RMCK57LMV2-K MCK57LMV2-A MCK57LMV2-N MC709MV2Technical standardFiltration Efficiency : 90% for 0.3 m Nacl (H10)Uint Mass Deviation : 175 g/Resistance : 8 pa Permeability :700 L/.sColor: blueMaterial: PP+PETPackage Contents: 5 x filterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.