Filtrete 20x30x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6 Pack (Actual Size 19.81 x 29.81 x 0.81 in)

Designed with 3M's exclusive 3-in-1 technology from Filtrete to trap unwanted air particles while allowing cleaner air to flow through Attracts and traps particles such as lint, pollen, dust, pet dander, smoke and smog 1000 MPR has a rating of MERV 11. The higher the MPR, the more microparticles - such as pollen, pet dander, smoke, bacteria and viruses - your filter will be trapped by the air that flows through it. Find your size: MPR 1000, MPR 1200 and MPR 1550 available in 4 4 inches. Slim fit and 5 inches. thick air filter.For optimal performance of your heating and cooling system or HVAC system, change your air filter at least every 90 days for 1 inch. Filter and at least every 12 months for 4 inches. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions., Weight: 4.84 pounds, Manufacturer: 3M