... mildew proof,deodorant,etc CE /UL /ISO/ ROSH High Density Filter Net :1.Normal Specifications: PET18*14,20*14 ... surface, beautiful outer case6.Great filtrating ability: High air permeability, high filtration efficiency, even distribution of blast volume and ... According to the different users' needs, various functions can be added, such as antibacterial, mildew proof, deodorant, negative, conduct ...