The Filtrete 14x25x1 AC Furnace Air Filter is a high-quality product manufactured by 3M. It features a pleated design with a MERV 11 rating and MPR 1000 technology, providing efficient filtration for optimal performance. This 4-pack of filters is designed for residential use only and has a filter life of 3 months. The filter media is synthetic polypropylene material, ensuring effective filtration of airborne particles. This unit is a reliable choice for maintaining indoor air quality in your home. MAKE YOUR HOME YOUR SANCTUARY: 4-pack of 3-month pleated Filtrete 14x25x1 MERV 11 MPR 1000 AC Furnace Air Filter helps capture unwanted particles from your household air to contribute to a cleaner, fresher home environment EXCLUSIVE TECHNOLOGY: Designed with Filtrete 3-in-1 technology to pull in and trap unwanted particles, allowing cleaner air to flow through COUNTLESS MICROPARTICLES: With a 1000 MPR and MERV 11 rating, your Filtrete Filter will help capture many microparticles from the air passing through it CERTIFIED: This furnace filter is CERTIFIED asthma and allergy-friendly (2) and helps capture dust, lint and other allergens in your household air CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your filter at least once every 90 days VERSATILE USES: Works for changing the air filters in your furnace, air conditioner/heating system or HVAC system 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