Filtrete 18x18x1 MPR 800 Air Filter made by 3M helps capture unwanted particles from your household air to contribute to a cleaner fresher home environment. Designed with exclusive Filtrete 3-in-1 technology including an MPR 800 and MERV 10 rating your AC filter will help pull and capture countless particles – such as dust mite debris and mold spores – while letting cleaner air flow through. Your Filtrete Filter will also capture large particles including lint pollen pet dander and household dust. Use a 3-month pleated 1-inch home HVAC filter in your furnace air conditioner or HVAC system. Two come in a pack so keep one filter as backup or use both in multiple areas. For optimal performance of your heating and cooling system or HVAC system change your furnace filter at least every 90 days. The NO. 1 Recommended HVAC Air Filter Brand (1) Filtrete’s Home Air Filters provide the breakthrough technology needed to change how we clean our air by filtering out particles both large and invisible to create a cleaner healthier home for ourselves and our families. Residential use only. (1) Based on the 2022 Ipsos US Brand Health Study of Residential HVAC Air Filters.