Filter-Monster 16x25x1 Enhanced Allergen Defense MERV 11 Pleated HVAC Air Conditioner Furnace Replacement Air Filter 4 Pack

At Filter Monster, we have over 25 years of experience helping customers breathe cleaner, healthier air with filtration solutions that combine performance, reliability, and value. Our enhanced allergen defense MERV 11 HVAC filters are designed to provide everyday protection against a wide range of common airborne contaminants. The MERV 11 HVAC filters capture up to 85% of particles sized .3 to 10 microns, including common irritants like dust, pollen, mold spores, pet dander, and lint. This makes them an excellent choice for households with allergy sufferers, pets, or anyone looking to improve indoor air quality without restricting airflow. What sets Filter Monster apart is our vibrant yellow filter media, which serves as a quick, built-in identifier for MERV 11 performance. The bright yellow media makes it easy to identify from other ratings during purchasing, handling, or installation—helping ensure you always get the right filter the first time. If you have kids in and out, some pets that think the couch is theirs, or you just need a good filter that you can rely on to keep your air clean without going overboard — yellow is the way to go. Affordable, resilient, and exactly what most homes need. Each package includes four (4) filters, providing up to a full year of clean air when replaced during the recommended time of every 90 days. For optimal performance, replace sooner if the filter becomes dirty, damaged, or if indoor air quality conditions demand it. Each filter also features a clearly marked label with an airflow direction indicator and a space to record the installation date, giving you peace of mind and helping maintain your HVAC system’s efficiency.