and high quality The 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, bacteria filter Model :folds filter BAC006A4C, BAC017A4C Applicable models : MC70KMV2 series and MCK57LMV2 series MC709MV2 MC70KMV2-N MC70KMV2-R MC70KMV2-A MC70KMV2-K, MCK57LMV2-W MCK57LMV2-RMCK57LMV2-K MCK57LMV2-A MCK57LMV2-N MC709MV2 Material: composite material colour: blue Package Contents: 9 x Filter Only the above package content, other products are not included. Note: Light 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.