Cleaner Filters 20x20x1 Air Filter, Pleated High Efficiency Allergy Furnace Filters for Home or Office with MERV 11 Rating (1 Pack) PREMIUM QUALITY - All Cleaner Filters are made in the U.S.A. and use sturdy frames designed to ensure maximum performance, and uniform pleats to maximize airflow and stymie the growth of mildew, bacteria, and mold - all our filters are rated to remain effective for up to 90 days BREATHE CLEAN AIR - MERV rating 11 pleated filter removes most airborne pollutants from your home including; pollen, pet dander, dust mites, mold, and fine dust particles including humidifier dust, auto emissions and lead dust so that you can breathe fresh and clean air SAVE MONEY - Allowing dust to accumulate in your air conditioning system increases the risk of the unit experiencing technical problems, according to the US Department of Energy, changing a dirty air filter will reduce an air conditioner's energy consumption by 5% - 15%! PERFECT FIT - 20x20x1 ( 19.5 x 19.5 ) Air filter can replace any standard furnace, HVAC or air conditioning filter, includes 1 filter IMPROVE EFFICIENCY - Cleaner Filters are made of supercharged pleated material, which is up to 30 times more effective at removing allergens and particles like dust, pollen, pet dander, mold, smoke, and fungi than normal fiberglass filters Use high-efficiency air filters for your heating and cooling system. Change air filters every 90 days (sometimes more depending on your environment) to ensure that they are operating at maximum efficiency. Get heating and cooling system ducts cleaned when necessary Lead Dust Automotive and Industrial Emissions Hair Spray Synthetic Cleaners Dust Pollen Dust Mites Lint Mold Stop forgetting to change your air filter No more driving around town to find the right filter size Keep the air in your home cleaner with our filters!