MAKE YOUR HOME YOUR SANCTUARY: 2-pack of 3-month pleated 1 Filtrete 20x30x1 MPR 1000 AC Furnace Air Filter helps capture unwanted particles from your household air to contribute to a cleaner, fresher home environment DIFFERENT FROM NOMINAL SIZE: Slightly different from the nominal size, this air filter s exact dimensions are 19.81 x 29.81 x 0.81 EXCLUSIVE TECHNOLOGY: Designed with exclusive Filtrete 3-in-1 technology to pull in and trap unwanted particles, allowing cleaner air to flow through COUNTLESS PARTICLES: With a 1000 MPR and MERV 11 rating, your air filter will help capture many microparticles from the air passing through it VERSATILE USES: Works for changing the air filters in your furnace, air conditioner/heating system or HVAC system CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your filter at least once every 90 days SUBSCRIBE AND SAVE: Once you buy your filter, simply click on "Subscribe and Save" to set up your delivery schedule and save on your orders MOST TRUSTED: Filtrete Brand is North America s most trusted brand of HVAC Filters, based on 2024 Sago US Brand Health Survey of Residential HVAC Air Filters.