10x20x1 AIR FILTER FOR FURNACE & AC SYSTEMS - Filtrete MERV 5 furnace filters designed for standard HVAC systems. Each 6-pack includes filters with actual dimensions 9.81" x 19.81" x 0.81." Compatible with furnace and air conditioner units requiring 10x20x1 size filters for whole air filtration MAKE YOUR HOME YOUR SANCTUARY: 6-pack of 3-month pleated Filtrete 10x20x1 MPR 300 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 9.81 x 19.81 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 300 MPR and MERV 5 rating, your Filtrete Filter will help capture many particles 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 SMART APP: Use the Filtrete Smart App (iOS or Android) to set 30-, 60- or 90-day reminders to change your air filter 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