Your home should be your sanctuary, starting with the air you breathe. Filtrete Allergen, Bacteria and Virus Air Filters help capture unwanted particles from your household air, contributing to a cleaner, fresher home environment. By proactively capturing dust, bacteria, viruses and allergens, these high performance filters help improve your home’s air quality. Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1-in home air filters for your furnace, air conditioner, or HVAC system Designed with exclusive Filtrete Brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through 1550 MPR has a rating of MERV 12 Attracts and captures microscopic particles such as smoke, cough and sneeze debris, bacteria and viruses and large particles, including lint, household dust and pollen The higher the MPR, the more microparticles--such as pollen, pet dander, smoke, bacteria and viruses--your filter will capture from the air passing through it 54% small particle capture, like bacteria and particles that carry viruses (% captured is based on ASHRAE 52.2 testing for 0.3 to 1 micron particles from the air passing through the filter, which relates to HVAC-industry standard efficiency testing) For optimal performance of your heating and cooling system or HVAC system, change your home air filter at least every 90 days for 1-in filters, and at least every 12 months for 4-in and 5-in filters For residential use only Series Name: 1550 MPR Allergen, Bacteria and Virus Actual Length (Inches): 19.75 Actual Thickness (Inches): 4.31 Actual Width (Inches): 19.75 Common Length (Inches): 20 Common Size (W x L x T): 20 x 20 x 4 Common Thickness (Inches): 4 Common Width (Inches): 20 Air Filter Longevity (Months): 12 Captures Bacteria: Yes Captures Debris and Lint: Yes Captures Dust Mite Debris: Yes Captures Household Dust: Yes Captures Mold Spores: Yes Captures Particles that Carry Odor: No Captures Particles that Carry Viruses: Yes Captures Pet Dander: Yes Captures Pollen: Yes Captures Smog: Yes Captures Smoke: Yes Commercial/Residential: Residential E1 Rating (Percentage): 54 E2 Rating (Percentage): 83 E3 Rating (Percentage): 90 Filter Efficiency (Percentage): 93 Filter Type: Electrostatic pleated Material: Synthetic MERV Rating: 12 MPR Rating: 1550 Package Quantity: 1 Subscription Eligible: Yes Warranty: Limited lifetime Washable: No App Compatibility: Yes Bluetooth Compatibility: No Smart Compatible: No Wi-Fi Compatibility: No Works with Air Conditioners: Yes Works with Android: Yes Works with iOS: Yes CA Residents: Prop 65 Warning(s): No UNSPSC: 40101700