Filtrete Healthy Living Elite Allergen Reduction HVAC Air Filter， Captures PM 2.5 Air Pollution， Optimum Airflow Protects your System， MPR 2200， 20 x 25 x 1-Inches， 2-Pack</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Filter Performance Rating of 10 provides protection against smoke and microscopic pollutants</li><li>Carries a 2200 MPR (microparticle performance rating)</li><li>Lasts up to 3 months</li><li>Attracts and captures 94% of large particles like mold spores， dust and pollen</li><li>Attracts and captures microscopic allergens like pet dander and smoke and microscopic particles that can carry bacteria， viruses and odors</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/51dGBbs0Z%2BL.jpg' noproxy></br>