Fine 0.3 Micrometre filter is adopted to effectively capture ultra-fine pollutants. The filter elements adopts E11 filter paper.The side seal is firm, which can reduce the loss of wind pressure and avoid secondary pollution during use.The filter can be cleaned and reused to keep the filter clean.It is best to replace the filter every 3-6 months.Colour:White+blackMaterial:plasticSize:15.3cmPackage Contents:3 x filterOnly the above package content, other products are not included.Note: Light shooting 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.
