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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 ATTRACTS AND CAPTURES microscopic particles such as smoke, cough and sneeze debris, bacteria and viruses - and large particles, including lint, household dust and pollen 1900 MPR has a rating of MERV 13 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. 62% 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 the filter to HVAC industry standard efficiency testing).CERTIFIED as asthma & allergy friendly (As outlined in report ASCR: 1246-01).FIND YOUR SIZE: 1900 MPR available in 4 in. 4 in. slim fit and 5 in. thick air filters.FOR OPTIMAL PERFORMANCE of your heating & 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 4in. and 5 inches. Filters.A dirty filter will slow down air flow and make the system work harder to keep you warm or cool - wasting energy. Sign-up for a filter change reminder program that works for you! › See more product details; Product description Your home should be your haven, starting with the air you breathe. Filtrete premium air filters for allergies, bacteria and viruses help trap unwanted particles from your household air and contribute to a cleaner, fresher living environment. By proactively capturing dust, bacteria, viruses and allergens, these high-performance filters help improve the air quality of your home.; Product description Your home should be your haven, starting with the air you breathe. Filtrete premium air filters for allergies, bacteria and viruses help trap unwanted particles from your household air and contribute to a cleaner, fresher living environment. By proactively capturing dust, bacteria, viruses and allergens, these high-performance filters help improve the air quality of your home.; Your home should be your haven, starting with the air you breathe. Filtrete premium air filters for allergies, bacteria and viruses help trap unwanted particles from your household air and contribute to a cleaner, fresher living environment. By proactively capturing dust, bacteria, viruses and allergens, these high-performance filters help improve the air quality of your home.