Features: Our electrostatic- filter enhances the filter effect,and extend the original- filter usage life. It can be used to any air filter related product,and just cut- it into suitable size. Easy to install,extand- the usage for time of machine. Efficiently- absorb and intercept- the dust, bacterial, pet shavings, hair,etc. Suitable for air conditioners ,cleaners,car air filter and other machines at the out let,filter PM-2.5 ,dust, etc. PM-2.5 remove rate can reach 83%. Low wind resistance, almost has- no influence at machine normal work and running. Specifications: Material: Non-woven fabrics- Size: approx 30x70cm/11.8x27.6in Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 10x Electrostatic- Filter Cotton Net 1 Roll Glue